Introsort

Here given code implementation process.

// C Program 
// Sort array elements by using introsort
#include <stdio.h>

#include <math.h>

//Function which is display arr elements
void display(int arr[], int size)
{
	for (int i = 0; i < size; ++i)
	{
		printf("  %d", arr[i]);
	}
	printf("\n");
}
// Swapping the array elements in given location
void swap_data(int arr[], int first, int second)
{
	int temp = arr[first];
	arr[first] = arr[second];
	arr[second] = temp;
}
// Perform the insertion sort in given array
void insertion_sort(int arr[], int size)
{
	int i = 0;
	int j = 0;
	for (i = 0; i < size - 1; ++i)
	{
		j = i + 1;
		while (j > 0 && arr[j - 1] > arr[j])
		{
			//Swap array element
			swap_data(arr, j, j - 1);
			j--;
		}
	}
}
int partition(int arr[], int low, int high)
{
	//Set the high index element to its proper sorted position
	int pv = arr[high];
	int i = low - 1;
	for (int j = low; j < high; ++j)
	{
		if (arr[j] < pv)
		{
			i++;
			swap_data(arr, i, j);
		}
	}
	//set the high index value to its sorted position
	swap_data(arr, i + 1, high);
	//returns the next sorting  element location
	return i + 1;
}
//Perform the quick sort in given array
void quick_sort(int arr[], int low, int high)
{
	if (low < high)
	{
		//Get the pivot element
		int pv = partition(arr, low, high);
		quick_sort(arr, low, pv - 1);
		quick_sort(arr, pv + 1, high);
	}
}
int find_pivot(int arr[], int a, int b, int c)
{
	if (arr[a] < arr[b] && arr[b] < arr[c])
	{
		return b;
	}
	else if (arr[c] <= arr[b] && arr[b] <= arr[a])
	{
		return b;
	}
	else if (arr[b] < arr[c] && arr[c] <= arr[a])
	{
		return c;
	}
	else if (arr[a] < arr[c] && arr[c] <= arr[b])
	{
		return c;
	}
	else if (arr[b] <= arr[a] && arr[a] < arr[c])
	{
		return a;
	}
	else if (arr[c] <= arr[a] && arr[a] < arr[b])
	{
		return a;
	}
}
int compare(int arr[], int left, int right, int root, int size)
{
	int location = -1;
	if (left < size && arr[left] > arr[root])
	{
		if (right < size && arr[right] > arr[left])
		{
			swap_data(arr, right, root);
			location = right;
		}
		else
		{
			swap_data(arr, left, root);
			location = left;
		}
	}
	else if (right < size && arr[right] > arr[root])
	{
		swap_data(arr, right, root);
		location = right;
	}
	return location;
}
//Perform the operation of heap sort 
void heap(int arr[], int size, int root)
{
	int left, right;
	while (root != -1)
	{
		left = 2 * root + 1;
		right = 2 * root + 2;
		root = compare(arr, left, right, root, size);
	}
}
//Sort array element using heap sort
void heap_sort(int arr[], int size)
{
	for (int i = (size / 2) - 1; i >= 0; i--)
	{
		heap(arr, size, i);
	}
	for (int i = size - 1; i >= 0; i--)
	{
		swap_data(arr, 0, i);
		heap(arr, i, 0);
	}
}
//Perform the introsort in given array
void execute_introsort(int arr[], int front, int tail, int deep)
{
	int size = tail - front;
	if (size < 16)
	{
		insertion_sort(arr, tail + 1);
	}
	else if (deep == 0)
	{
		//when heap sort are work
		heap_sort(arr, tail + 1);
	}
	else
	{
		//When executed of quick sort
		int pivot = find_pivot(arr, front, front + ((tail - front) / 2) + 1, tail);
		swap_data(arr, pivot, tail);
		int point = partition(arr, front, tail);
		execute_introsort(arr, front, point - 1, deep - 1);
		execute_introsort(arr, point + 1, tail, deep - 1);
	}
}
//Handling the request of introsort
void introsort(int arr[], int size)
{
	int deep = 2 * log(size - 1);
	execute_introsort(arr, 0, size - 1, deep);
}
int main()
{
	//Define an array of integers
	int arr[] = {
		11,
		8,
		3,
		8,
		12,
		-1,
		-3,
		1,
		4,
		7,
		5
	};
	//Get the size of arr
	int size = sizeof(arr) / sizeof(arr[0]);
	//Before sort
	printf("\n  Before Sort  :\n");
	display(arr, size);
	//Sort element
	introsort(arr, size);
	//After sort
	printf("\n  After Sort  :\n");
	display(arr, size);
	int arr1[] = {
		9,
		-3,
		5,
		1,
		7,
		9,
		3,
		4,
		5,
		2,
		4,
		7,
		8,
		-4,
		6,
		34,
		43,
		2,
		7,
		8,
		11,
		12,
		9,
		-6,
		2
	};
	//Get the size of arr
	size = sizeof(arr1) / sizeof(arr1[0]);
	//Before sort
	printf("\n  Before Sort  :\n");
	display(arr1, size);
	//Sort element
	introsort(arr1, size);
	//After sort
	printf("\n  After Sort  :\n");
	display(arr1, size);
	return 0;
}

Output

  Before Sort  :
  11  8  3  8  12  -1  -3  1  4  7  5

  After Sort  :
  -3  -1  1  3  4  5  7  8  8  11  12

  Before Sort  :
  9  -3  5  1  7  9  3  4  5  2  4  7  8  -4  6  34  43  2  7  8  11  12  9  -6  2

  After Sort  :
  -6  -4  -3  1  2  2  2  3  4  4  5  5  6  7  7  7  8  8  9  9  9  11  12  34  43
/*
	Java Program
	Sort array elements by using  introsort
*/
class MySort
{
	//Function which is display arr elements
	public void display(int[] arr, int size)
	{
		for (int i = 0; i < size; ++i)
		{
			System.out.print(" " + arr[i]);
		}
		System.out.print("\n");
	}
	// Swapping the array elements in given location
	public void swap_data(int[] arr, int first, int second)
	{
		int temp = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}
	// Perform the insertion sort in given array
	public void insertion_sort(int[] arr, int size)
	{
		int i = 0;
		int j = 0;
		for (i = 0; i < size - 1; ++i)
		{
			j = i + 1;
			while (j > 0 && arr[j - 1] > arr[j])
			{
				//Swap array element
				swap_data(arr, j, j - 1);
				j--;
			}
		}
	}
	public int partition(int[] arr, int low, int high)
	{
		//Set the high index element to its proper sorted position
		int pv = arr[high];
		int i = low - 1;
		for (int j = low; j < high; ++j)
		{
			if (arr[j] < pv)
			{
				i++;
				swap_data(arr, i, j);
			}
		}
		//set the high index value to its sorted position
		swap_data(arr, i + 1, high);
		//returns the next sorting  element location
		return i + 1;
	}
	//Perform the quick sort in given array
	public void quick_sort(int[] arr, int low, int high)
	{
		if (low < high)
		{
			//Get the pivot element
			int pv = partition(arr, low, high);
			quick_sort(arr, low, pv - 1);
			quick_sort(arr, pv + 1, high);
		}
	}
	public int find_pivot(int[] arr, int a, int b, int c)
	{
		if (arr[a] < arr[b] && arr[b] < arr[c])
		{
			return b;
		}
		else if (arr[c] <= arr[b] && arr[b] <= arr[a])
		{
			return b;
		}
		else if (arr[b] < arr[c] && arr[c] <= arr[a])
		{
			return c;
		}
		else if (arr[a] < arr[c] && arr[c] <= arr[b])
		{
			return c;
		}
		else if (arr[b] <= arr[a] && arr[a] < arr[c])
		{
			return a;
		}
		else 
		{
			return a;
		}
	}
	public int compare(int[] arr, int left, int right, int root, int size)
	{
		int location = -1;
		if (left < size && arr[left] > arr[root])
		{
			if (right < size && arr[right] > arr[left])
			{
				swap_data(arr, right, root);
				location = right;
			}
			else
			{
				swap_data(arr, left, root);
				location = left;
			}
		}
		else if (right < size && arr[right] > arr[root])
		{
			swap_data(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform the operation of heap sort 
	public void heap(int[] arr, int size, int root)
	{
		int left, right;
		while (root != -1)
		{
			left = 2 * root + 1;
			right = 2 * root + 2;
			root = compare(arr, left, right, root, size);
		}
	}
	//Sort array element using heap sort
	public void heap_sort(int[] arr, int size)
	{
		for (int i = (size / 2) - 1; i >= 0; i--)
		{
			heap(arr, size, i);
		}
		for (int i = size - 1; i >= 0; i--)
		{
			swap_data(arr, 0, i);
			heap(arr, i, 0);
		}
	}
	//Perform the introsort in given array
	public void execute_introsort(int[] arr, int front, int tail, int deep)
	{
		int size = tail - front;
		if (size < 16)
		{
			insertion_sort(arr, tail + 1);
		}
		else if (deep == 0)
		{
			//when heap sort are work
			heap_sort(arr, tail + 1);
		}
		else
		{
			//When executed of quick sort
			int pivot = find_pivot(arr, front, front + ((tail - front) / 2) + 1, tail);
			swap_data(arr, pivot, tail);
			int point = partition(arr, front, tail);
			execute_introsort(arr, front, point - 1, deep - 1);
			execute_introsort(arr, point + 1, tail, deep - 1);
		}
	}
	//Handling the request of introsort
	public void introsort(int[] arr, int size)
	{
		int deep = (int)(2 * Math.floor(Math.log(size) / Math.log(2)));
		execute_introsort(arr, 0, size - 1, deep);
	}
	public static void main(String[] args)
	{
		MySort obj = new MySort();
		//Define an array of integers
		int[] arr = {
			11,
			8,
			3,
			8,
			12,
			-1,
			-3,
			1,
			4,
			7,
			5
		};
		//Get the size
		int size = arr.length;;
		System.out.print("\n Befre Sort :\n");
		obj.display(arr, size);
		//Sort element
		obj.introsort(arr, size);
		System.out.print("\n After Sort :\n");
		obj.display(arr, size);
		int[] arr1 = {
			9,
			-3,
			5,
			1,
			7,
			9,
			3,
			4,
			5,
			2,
			4,
			7,
			8,
			-4,
			6,
			34,
			43,
			2,
			7,
			8,
			11,
			12,
			9,
			-6,
			2
		};
		//Get the size
		size = arr1.length;
		System.out.print("\n Before Sort :\n");
		obj.display(arr1, size);
		//Sort element
		obj.introsort(arr1, size);
		System.out.print("\n After Sort :\n");
		obj.display(arr1, size);
	}
}

Output

 Befre Sort :
 11 8 3 8 12 -1 -3 1 4 7 5

 After Sort :
 -3 -1 1 3 4 5 7 8 8 11 12

 Before Sort :
 9 -3 5 1 7 9 3 4 5 2 4 7 8 -4 6 34 43 2 7 8 11 12 9 -6 2

 After Sort :
 -6 -4 -3 1 2 2 2 3 4 4 5 5 6 7 7 7 8 8 9 9 9 11 12 34 43
//Include header file
#include <iostream>

#include<math.h>

using namespace std;
/*
	C++ Program
	Sort array elements by using  introsort
*/
class MySort
{
	public:
		//Function which is display arr elements
		void display(int arr[], int size)
		{
			for (int i = 0; i < size; ++i)
			{
				cout << " " << arr[i];
			}
			cout << "\n";
		}
	// Swapping the array elements in given location
	void swap_data(int arr[], int first, int second)
	{
		int temp = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}
	// Perform the insertion sort in given array
	void insertion_sort(int arr[], int size)
	{
		int i = 0;
		int j = 0;
		for (i = 0; i < size - 1; ++i)
		{
			j = i + 1;
			while (j > 0 && arr[j - 1] > arr[j])
			{
				//Swap array element
				this->swap_data(arr, j, j - 1);
				j--;
			}
		}
	}
	int partition(int arr[], int low, int high)
	{
		//Set the high index element to its proper sorted position
		int pv = arr[high];
		int i = low - 1;
		for (int j = low; j < high; ++j)
		{
			if (arr[j] < pv)
			{
				i++;
				this->swap_data(arr, i, j);
			}
		}
		//set the high index value to its sorted position
		this->swap_data(arr, i + 1, high);
		//returns the next sorting  element location
		return i + 1;
	}
	//Perform the quick sort in given array
	void quick_sort(int arr[], int low, int high)
	{
		if (low < high)
		{
			//Get the pivot element
			int pv = this->partition(arr, low, high);
			this->quick_sort(arr, low, pv - 1);
			this->quick_sort(arr, pv + 1, high);
		}
	}
	int find_pivot(int arr[], int a, int b, int c)
	{
		if (arr[a] < arr[b] && arr[b] < arr[c])
		{
			return b;
		}
		else if (arr[c] <= arr[b] && arr[b] <= arr[a])
		{
			return b;
		}
		else if (arr[b] < arr[c] && arr[c] <= arr[a])
		{
			return c;
		}
		else if (arr[a] < arr[c] && arr[c] <= arr[b])
		{
			return c;
		}
		else if (arr[b] <= arr[a] && arr[a] < arr[c])
		{
			return a;
		}
		else
		{
			return a;
		}
	}
	int compare(int arr[], int left, int right, int root, int size)
	{
		int location = -1;
		if (left < size && arr[left] > arr[root])
		{
			if (right < size && arr[right] > arr[left])
			{
				this->swap_data(arr, right, root);
				location = right;
			}
			else
			{
				this->swap_data(arr, left, root);
				location = left;
			}
		}
		else if (right < size && arr[right] > arr[root])
		{
			this->swap_data(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform the operation of heap sort 
	void heap(int arr[], int size, int root)
	{
		int left, right;
		while (root != -1)
		{
			left = 2 * root + 1;
			right = 2 * root + 2;
			root = this->compare(arr, left, right, root, size);
		}
	}
	//Sort array element using heap sort
	void heap_sort(int arr[], int size)
	{
		for (int i = (size / 2) - 1; i >= 0; i--)
		{
			this->heap(arr, size, i);
		}
		for (int i = size - 1; i >= 0; i--)
		{
			this->swap_data(arr, 0, i);
			this->heap(arr, i, 0);
		}
	}
	//Perform the introsort in given array
	void execute_introsort(int arr[], int front, int tail, int deep)
	{
		int size = tail - front;
		if (size < 16)
		{
			this->insertion_sort(arr, tail + 1);
		}
		else if (deep == 0)
		{
			//when heap sort are work
			this->heap_sort(arr, tail + 1);
		}
		else
		{
			//When executed of quick sort
			int pivot = this->find_pivot(arr, front, front + ((tail - front) / 2) + 1, tail);
			this->swap_data(arr, pivot, tail);
			int point = this->partition(arr, front, tail);
			this->execute_introsort(arr, front, point - 1, deep - 1);
			this->execute_introsort(arr, point + 1, tail, deep - 1);
		}
	}
	//Handling the request of introsort
	void introsort(int arr[], int size)
	{
		int deep = (int)(2 * floor(log(size) / log(2)));
		this->execute_introsort(arr, 0, size - 1, deep);
	}
};
int main()
{
	MySort obj = MySort();
	int arr[] = {
		11 , 8 , 3 , 8 , 12 , -1 , -3 , 1 , 4 , 7 , 5
	};
	//Get the size
	int size = sizeof(arr) / sizeof(arr[0]);;
	cout << "\n Befre Sort :\n";
	obj.display(arr, size);
	//Sort element
	obj.introsort(arr, size);
	cout << "\n After Sort :\n";
	obj.display(arr, size);
	int arr1[] = {
		9 , -3 , 5 , 1 , 7 , 9 , 3 , 4 , 5 , 2 , 4 , 7 , 8 , -4 , 6 , 34 , 43 , 2 , 7 , 8 , 11 , 12 , 9 , -6 , 2
	};
	//Get the size
	size = sizeof(arr1) / sizeof(arr1[0]);
	cout << "\n Before Sort :\n";
	obj.display(arr1, size);
	//Sort element
	obj.introsort(arr1, size);
	cout << "\n After Sort :\n";
	obj.display(arr1, size);
	return 0;
}

Output

 Befre Sort :
 11 8 3 8 12 -1 -3 1 4 7 5

 After Sort :
 -3 -1 1 3 4 5 7 8 8 11 12

 Before Sort :
 9 -3 5 1 7 9 3 4 5 2 4 7 8 -4 6 34 43 2 7 8 11 12 9 -6 2

 After Sort :
 -6 -4 -3 1 2 2 2 3 4 4 5 5 6 7 7 7 8 8 9 9 9 11 12 34 43
//Include namespace system
using System;
/*
	C# Program
	Sort array elements by using  introsort
*/
class MySort
{
	//Function which is display arr elements
	public void display(int[] arr, int size)
	{
		for (int i = 0; i < size; ++i)
		{
			Console.Write(" " + arr[i]);
		}
		Console.Write("\n");
	}
	// Swapping the array elements in given location
	public void swap_data(int[] arr, int first, int second)
	{
		int temp = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}
	// Perform the insertion sort in given array
	public void insertion_sort(int[] arr, int size)
	{
		int i = 0;
		int j = 0;
		for (i = 0; i < size - 1; ++i)
		{
			j = i + 1;
			while (j > 0 && arr[j - 1] > arr[j])
			{
				//Swap array element
				swap_data(arr, j, j - 1);
				j--;
			}
		}
	}
	public int partition(int[] arr, int low, int high)
	{
		//Set the high index element to its proper sorted position
		int pv = arr[high];
		int i = low - 1;
		for (int j = low; j < high; ++j)
		{
			if (arr[j] < pv)
			{
				i++;
				swap_data(arr, i, j);
			}
		}
		//set the high index value to its sorted position
		swap_data(arr, i + 1, high);
		//returns the next sorting  element location
		return i + 1;
	}
	//Perform the quick sort in given array
	public void quick_sort(int[] arr, int low, int high)
	{
		if (low < high)
		{
			//Get the pivot element
			int pv = partition(arr, low, high);
			quick_sort(arr, low, pv - 1);
			quick_sort(arr, pv + 1, high);
		}
	}
	public int find_pivot(int[] arr, int a, int b, int c)
	{
		if (arr[a] < arr[b] && arr[b] < arr[c])
		{
			return b;
		}
		else if (arr[c] <= arr[b] && arr[b] <= arr[a])
		{
			return b;
		}
		else if (arr[b] < arr[c] && arr[c] <= arr[a])
		{
			return c;
		}
		else if (arr[a] < arr[c] && arr[c] <= arr[b])
		{
			return c;
		}
		else if (arr[b] <= arr[a] && arr[a] < arr[c])
		{
			return a;
		}
		else
		{
			return a;
		}
	}
	public int compare(int[] arr, int left, int right, int root, int size)
	{
		int location = -1;
		if (left < size && arr[left] > arr[root])
		{
			if (right < size && arr[right] > arr[left])
			{
				swap_data(arr, right, root);
				location = right;
			}
			else
			{
				swap_data(arr, left, root);
				location = left;
			}
		}
		else if (right < size && arr[right] > arr[root])
		{
			swap_data(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform the operation of heap sort 
	public void heap(int[] arr, int size, int root)
	{
		int left, right;
		while (root != -1)
		{
			left = 2 * root + 1;
			right = 2 * root + 2;
			root = compare(arr, left, right, root, size);
		}
	}
	//Sort array element using heap sort
	public void heap_sort(int[] arr, int size)
	{
		for (int i = (size / 2) - 1; i >= 0; i--)
		{
			heap(arr, size, i);
		}
		for (int i = size - 1; i >= 0; i--)
		{
			swap_data(arr, 0, i);
			heap(arr, i, 0);
		}
	}
	//Perform the introsort in given array
	public void execute_introsort(int[] arr, int front, int tail, int deep)
	{
		int size = tail - front;
		if (size < 16)
		{
			insertion_sort(arr, tail + 1);
		}
		else if (deep == 0)
		{
			//when heap sort are work
			heap_sort(arr, tail + 1);
		}
		else
		{
			//When executed of quick sort
			int pivot = find_pivot(arr, front, front + ((tail - front) / 2) + 1, tail);
			swap_data(arr, pivot, tail);
			int point = partition(arr, front, tail);
			execute_introsort(arr, front, point - 1, deep - 1);
			execute_introsort(arr, point + 1, tail, deep - 1);
		}
	}
	//Handling the request of introsort
	public void introsort(int[] arr, int size)
	{
		int deep = (int)(2 * Math.Floor(Math.Log(size) / Math.Log(2)));
		execute_introsort(arr, 0, size - 1, deep);
	}
	public static void Main(String[] args)
	{
		MySort obj = new MySort();
		int[] arr = {
			11 , 8 , 3 , 8 , 12 , -1 , -3 , 1 , 4 , 7 , 5
		};
		//Get the size
		int size = arr.Length;;
		Console.Write("\n Befre Sort :\n");
		obj.display(arr, size);
		//Sort element
		obj.introsort(arr, size);
		Console.Write("\n After Sort :\n");
		obj.display(arr, size);
		int[] arr1 = {
			9 , -3 , 5 , 1 , 7 , 9 , 3 , 4 , 5 , 2 , 4 , 7 , 8 , -4 , 6 , 34 , 43 , 2 , 7 , 8 , 11 , 12 , 9 , -6 , 2
		};
		//Get the size
		size = arr1.Length;
		Console.Write("\n Before Sort :\n");
		obj.display(arr1, size);
		//Sort element
		obj.introsort(arr1, size);
		Console.Write("\n After Sort :\n");
		obj.display(arr1, size);
	}
}

Output

 Befre Sort :
 11 8 3 8 12 -1 -3 1 4 7 5

 After Sort :
 -3 -1 1 3 4 5 7 8 8 11 12

 Before Sort :
 9 -3 5 1 7 9 3 4 5 2 4 7 8 -4 6 34 43 2 7 8 11 12 9 -6 2

 After Sort :
 -6 -4 -3 1 2 2 2 3 4 4 5 5 6 7 7 7 8 8 9 9 9 11 12 34 43
<?php
/*
	Php Program
	Sort array elements by using introsort
*/
class MySort
{
	//Function which is display arr elements
	public	function display($arr, $size)
	{
		for ($i = 0; $i < $size; ++$i)
		{
			echo " ". $arr[$i];
		}
		echo "\n";
	}
	// Swapping the array elements in given location
	public	function swap_data( & $arr, $first, $second)
	{
		$temp = $arr[$first];
		$arr[$first] = $arr[$second];
		$arr[$second] = $temp;
	}
	// Perform the insertion sort in given array
	public	function insertion_sort( & $arr, $size)
	{
		$i = 0;
		$j = 0;
		for ($i = 0; $i < $size - 1; ++$i)
		{
			$j = $i + 1;
			while ($j > 0 && $arr[$j - 1] > $arr[$j])
			{
				//Swap array element
				$this->swap_data($arr, $j, $j - 1);
				$j--;
			}
		}
	}
	public	function partition( & $arr, $low, $high)
	{
		//Set the high index element to its proper sorted position
		$pv = $arr[$high];
		$i = $low - 1;
		for ($j = $low; $j < $high; ++$j)
		{
			if ($arr[$j] < $pv)
			{
				$i++;
				$this->swap_data($arr, $i, $j);
			}
		}
		//set the high index value to its sorted position
		$this->swap_data($arr, $i + 1, $high);
		//returns the next sorting  element location
		return $i + 1;
	}
	//Perform the quick sort in given array
	public	function quick_sort( & $arr, $low, $high)
	{
		if ($low < $high)
		{
			//Get the pivot element
			$pv = $this->partition($arr, $low, $high);
			$this->quick_sort($arr, $low, $pv - 1);
			$this->quick_sort($arr, $pv + 1, $high);
		}
	}
	public	function find_pivot( & $arr, $a, $b, $c)
	{
		if ($arr[$a] < $arr[$b] && $arr[$b] < $arr[$c])
		{
			return $b;
		}
		else if ($arr[$c] <= $arr[$b] && $arr[$b] <= $arr[$a])
		{
			return $b;
		}
		else if ($arr[$b] < $arr[$c] && $arr[$c] <= $arr[$a])
		{
			return $c;
		}
		else if ($arr[$a] < $arr[$c] && $arr[$c] <= $arr[$b])
		{
			return $c;
		}
		else if ($arr[$b] <= $arr[$a] && $arr[$a] < $arr[$c])
		{
			return $a;
		}
		else
		{
			return $a;
		}
	}
	public	function compare( & $arr, $left, $right, $root, $size)
	{
		$location = -1;
		if ($left < $size && $arr[$left] > $arr[$root])
		{
			if ($right < $size && $arr[$right] > $arr[$left])
			{
				$this->swap_data($arr, $right, $root);
				$location = $right;
			}
			else
			{
				$this->swap_data($arr, $left, $root);
				$location = $left;
			}
		}
		else if ($right < $size && $arr[$right] > $arr[$root])
		{
			$this->swap_data($arr, $right, $root);
			$location = $right;
		}
		return $location;
	}
	//Perform the operation of heap sort 
	public	function heap( & $arr, $size, $root)
	{
		$left;
		$right;
		while ($root != -1)
		{
			$left = 2 * $root + 1;
			$right = 2 * $root + 2;
			$root = $this->compare($arr, $left, $right, $root, $size);
		}
	}
	//Sort array element using heap sort
	public	function heap_sort( & $arr, $size)
	{
		for ($i = (intval($size / 2)) - 1; $i >= 0; $i--)
		{
			$this->heap($arr, $size, $i);
		}
		for ($i = $size - 1; $i >= 0; $i--)
		{
			$this->swap_data($arr, 0, $i);
			$this->heap($arr, $i, 0);
		}
	}
	//Perform the introsort in given array
	public	function execute_introsort( & $arr, $front, $tail, $deep)
	{
		$size = $tail - $front;
		if ($size < 16)
		{
			$this->insertion_sort($arr, $tail + 1);
		}
		else if ($deep == 0)
		{
			//when heap sort are work
			$this->heap_sort($arr, $tail + 1);
		}
		else
		{
			//When executed of quick sort
			$pivot = $this->find_pivot($arr, $front, $front + (intval(($tail - $front) / 2)) + 1, $tail);
			$this->swap_data($arr, $pivot, $tail);
			$point = $this->partition($arr, $front, $tail);
			$this->execute_introsort($arr, $front, $point - 1, $deep - 1);
			$this->execute_introsort($arr, $point + 1, $tail, $deep - 1);
		}
	}
	//Handling the request of introsort
	public	function introsort( & $arr, $size)
	{
		$deep = ((2 * floor(log($size) / log(2))));
		$this->execute_introsort($arr, 0, $size - 1, $deep);
	}
}

function main()
{
	$obj = new MySort();
	//Define an array of integers
	$arr = array(11, 8, 3, 8, 12, -1, -3, 1, 4, 7, 5);
	//Get the size
	$size = count($arr);;
	echo "\n Befre Sort :\n";
	$obj->display($arr, $size);
	//Sort element
	$obj->introsort($arr, $size);
	echo "\n After Sort :\n";
	$obj->display($arr, $size);
	$arr1 = array(9, -3, 5, 1, 7, 9, 3, 4, 5, 2, 4, 7, 8, -4, 6, 34, 43, 2, 7, 8, 11, 12, 9, -6, 2);
	//Get the size
	$size = count($arr1);
	echo "\n Before Sort :\n";
	$obj->display($arr1, $size);
	//Sort element
	$obj->introsort($arr1, $size);
	echo "\n After Sort :\n";
	$obj->display($arr1, $size);
}
main();

Output

 Befre Sort :
 11 8 3 8 12 -1 -3 1 4 7 5

 After Sort :
 -3 -1 1 3 4 5 7 8 8 11 12

 Before Sort :
 9 -3 5 1 7 9 3 4 5 2 4 7 8 -4 6 34 43 2 7 8 11 12 9 -6 2

 After Sort :
 -6 -4 -3 1 2 2 2 3 4 4 5 5 6 7 7 7 8 8 9 9 9 11 12 34 43
/*
	Node Js Program
	Sort array elements by using introsort
*/
class MySort
{
	//Function which is display arr elements
	display(arr, size)
	{
		for (var i = 0; i < size; ++i)
		{
			process.stdout.write(" " + arr[i]);
		}
		process.stdout.write("\n");
	}
	// Swapping the array elements in given location
	swap_data(arr, first, second)
	{
		var temp = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}
	// Perform the insertion sort in given array
	insertion_sort(arr, size)
	{
		var i = 0;
		var j = 0;
		for (i = 0; i < size - 1; ++i)
		{
			j = i + 1;
			while (j > 0 && arr[j - 1] > arr[j])
			{
				//Swap array element
				this.swap_data(arr, j, j - 1);
				j--;
			}
		}
	}
	partition(arr, low, high)
	{
		//Set the high index element to its proper sorted position
		var pv = arr[high];
		var i = low - 1;
		for (var j = low; j < high; ++j)
		{
			if (arr[j] < pv)
			{
				i++;
				this.swap_data(arr, i, j);
			}
		}
		//set the high index value to its sorted position
		this.swap_data(arr, i + 1, high);
		//returns the next sorting  element location
		return i + 1;
	}
	//Perform the quick sort in given array
	quick_sort(arr, low, high)
	{
		if (low < high)
		{
			//Get the pivot element
			var pv = this.partition(arr, low, high);
			this.quick_sort(arr, low, pv - 1);
			this.quick_sort(arr, pv + 1, high);
		}
	}
	find_pivot(arr, a, b, c)
	{
		if (arr[a] < arr[b] && arr[b] < arr[c])
		{
			return b;
		}
		else if (arr[c] <= arr[b] && arr[b] <= arr[a])
		{
			return b;
		}
		else if (arr[b] < arr[c] && arr[c] <= arr[a])
		{
			return c;
		}
		else if (arr[a] < arr[c] && arr[c] <= arr[b])
		{
			return c;
		}
		else if (arr[b] <= arr[a] && arr[a] < arr[c])
		{
			return a;
		}
		else
		{
			return a;
		}
	}
	compare(arr, left, right, root, size)
	{
		var location = -1;
		if (left < size && arr[left] > arr[root])
		{
			if (right < size && arr[right] > arr[left])
			{
				this.swap_data(arr, right, root);
				location = right;
			}
			else
			{
				this.swap_data(arr, left, root);
				location = left;
			}
		}
		else if (right < size && arr[right] > arr[root])
		{
			this.swap_data(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform the operation of heap sort 
	heap(arr, size, root)
	{
		var left;
		var right;
		while (root != -1)
		{
			left = 2 * root + 1;
			right = 2 * root + 2;
			root = this.compare(arr, left, right, root, size);
		}
	}
	//Sort array element using heap sort
	heap_sort(arr, size)
	{
		for (var i = (parseInt(size / 2)) - 1; i >= 0; i--)
		{
			this.heap(arr, size, i);
		}
		for (var i = size - 1; i >= 0; i--)
		{
			this.swap_data(arr, 0, i);
			this.heap(arr, i, 0);
		}
	}
	//Perform the introsort in given array
	execute_introsort(arr, front, tail, deep)
	{
		var size = tail - front;
		if (size < 16)
		{
			this.insertion_sort(arr, tail + 1);
		}
		else if (deep == 0)
		{
			//when heap sort are work
			this.heap_sort(arr, tail + 1);
		}
		else
		{
			//When executed of quick sort
			var pivot = this.find_pivot(arr, front, front + (parseInt((tail - front) / 2)) + 1, tail);
			this.swap_data(arr, pivot, tail);
			var point = this.partition(arr, front, tail);
			this.execute_introsort(arr, front, point - 1, deep - 1);
			this.execute_introsort(arr, point + 1, tail, deep - 1);
		}
	}
	//Handling the request of introsort
	introsort(arr, size)
	{
		var deep = ((2 * Math.floor(Math.log(size) / Math.log(2))));
		this.execute_introsort(arr, 0, size - 1, deep);
	}
}

function main()
{
	var obj = new MySort();
	//Define an array of integers
	var arr = [11, 8, 3, 8, 12, -1, -3, 1, 4, 7, 5];
	//Get the size
	var size = arr.length;;
	process.stdout.write("\n Befre Sort :\n");
	obj.display(arr, size);
	//Sort element
	obj.introsort(arr, size);
	process.stdout.write("\n After Sort :\n");
	obj.display(arr, size);
	var arr1 = [9, -3, 5, 1, 7, 9, 3, 4, 5, 2, 4, 7, 8, -4, 6, 34, 43, 2, 7, 8, 11, 12, 9, -6, 2];
	//Get the size
	size = arr1.length;
	process.stdout.write("\n Before Sort :\n");
	obj.display(arr1, size);
	//Sort element
	obj.introsort(arr1, size);
	process.stdout.write("\n After Sort :\n");
	obj.display(arr1, size);
}
main();

Output

 Befre Sort :
 11 8 3 8 12 -1 -3 1 4 7 5

 After Sort :
 -3 -1 1 3 4 5 7 8 8 11 12

 Before Sort :
 9 -3 5 1 7 9 3 4 5 2 4 7 8 -4 6 34 43 2 7 8 11 12 9 -6 2

 After Sort :
 -6 -4 -3 1 2 2 2 3 4 4 5 5 6 7 7 7 8 8 9 9 9 11 12 34 43
import math
# 
# 	Python 3 Program
# 	Sort array elements by using introsort

class MySort :
	# Function which is display arr elements
	def display(self, arr, size) :
		i = 0
		while (i < size) :
			print(" ", arr[i], end = "")
			i += 1
		
		print("\n", end = "")
	
	#  Swapping the array elements in given location
	def swap_data(self, arr, first, second) :
		temp = arr[first]
		arr[first] = arr[second]
		arr[second] = temp
	
	#  Perform the insertion sort in given array
	def insertion_sort(self, arr, size) :
		i = 0
		j = 0
		while (i < size - 1) :
			j = i + 1
			while (j > 0 and arr[j - 1] > arr[j]) :
				# Swap array element
				self.swap_data(arr, j, j - 1)
				j -= 1
			
			i += 1
		
	
	def partition(self, arr, low, high) :
		# Set the high index element to its proper sorted position
		pv = arr[high]
		i = low - 1
		j = low
		while (j < high) :
			if (arr[j] < pv) :
				i += 1
				self.swap_data(arr, i, j)
			
			j += 1
		
		# set the high index value to its sorted position
		self.swap_data(arr, i + 1, high)
		# returns the next sorting  element location
		return i + 1
	
	# Perform the quick sort in given array
	def quick_sort(self, arr, low, high) :
		if (low < high) :
			# Get the pivot element
			pv = self.partition(arr, low, high)
			self.quick_sort(arr, low, pv - 1)
			self.quick_sort(arr, pv + 1, high)
		
	
	def find_pivot(self, arr, a, b, c) :
		if (arr[a] < arr[b] and arr[b] < arr[c]) :
			return b
		
		elif(arr[c] <= arr[b] and arr[b] <= arr[a]) :
			return b
		
		elif(arr[b] < arr[c] and arr[c] <= arr[a]) :
			return c
		
		elif(arr[a] < arr[c] and arr[c] <= arr[b]) :
			return c
		
		elif(arr[b] <= arr[a] and arr[a] < arr[c]) :
			return a
		else :
			return a
		
	
	def compare(self, arr, left, right, root, size) :
		location = -1
		if (left < size and arr[left] > arr[root]) :
			if (right < size and arr[right] > arr[left]) :
				self.swap_data(arr, right, root)
				location = right
			else :
				self.swap_data(arr, left, root)
				location = left
			
		
		elif(right < size and arr[right] > arr[root]) :
			self.swap_data(arr, right, root)
			location = right
		
		return location
	
	# Perform the operation of heap sort 
	def heap(self, arr, size, root) :
		left
		right
		while (root != -1) :
			left = 2 * root + 1
			right = 2 * root + 2
			root = self.compare(arr, left, right, root, size)
		
	
	# Sort array element using heap sort
	def heap_sort(self, arr, size) :
		i = (int(size / 2)) - 1
		while (i >= 0) :
			self.heap(arr, size, i)
			i -= 1
		
		i = size - 1
		while (i >= 0) :
			self.swap_data(arr, 0, i)
			self.heap(arr, i, 0)
			i -= 1
		
	
	# Perform the introsort in given array
	def execute_introsort(self, arr, front, tail, deep) :
		size = tail - front
		if (size < 16) :
			self.insertion_sort(arr, tail + 1)
		
		elif(deep == 0) :
			# when heap sort are work
			self.heap_sort(arr, tail + 1)
		else :
			# When executed of quick sort
			pivot = self.find_pivot(arr, front, front + (int((tail - front) / 2)) + 1, tail)
			self.swap_data(arr, pivot, tail)
			point = self.partition(arr, front, tail)
			self.execute_introsort(arr, front, point - 1, deep - 1)
			self.execute_introsort(arr, point + 1, tail, deep - 1)
		
	
	# Handling the request of introsort
	def introsort(self, arr, size) :
		deep = ((2 * math.floor(int(math.log(size) / math.log(2)))))
		self.execute_introsort(arr, 0, size - 1, deep)
	

def main() :
	obj = MySort()
	# Define an array of integers
	arr = [11, 8, 3, 8, 12, -1, -3, 1, 4, 7, 5]
	# Get the size
	size = len(arr)
	print("\n Befre Sort :\n", end = "")
	obj.display(arr, size)
	# Sort element
	obj.introsort(arr, size)
	print("\n After Sort :\n", end = "")
	obj.display(arr, size)
	arr1 = [9, -3, 5, 1, 7, 9, 3, 4, 5, 2, 4, 7, 8, -4, 6, 34, 43, 2, 7, 8, 11, 12, 9, -6, 2]
	# Get the size
	size = len(arr1)
	print("\n Before Sort :\n", end = "")
	obj.display(arr1, size)
	# Sort element
	obj.introsort(arr1, size)
	print("\n After Sort :\n", end = "")
	obj.display(arr1, size)

if __name__ == "__main__": main()

Output

 Befre Sort :
  11  8  3  8  12  -1  -3  1  4  7  5

 After Sort :
  -3  -1  1  3  4  5  7  8  8  11  12

 Before Sort :
  9  -3  5  1  7  9  3  4  5  2  4  7  8  -4  6  34  43  2  7  8  11  12  9  -6  2

 After Sort :
  -6  -4  -3  1  2  2  2  3  4  4  5  5  6  7  7  7  8  8  9  9  9  11  12  34  43
# 	Ruby Program
# 	Sort array elements by using introsort

class MySort

	# Function which is display arr elements
	def display(arr, size)
	
		i = 0
		while (i < size)
		
			print(" ", arr[i])
			i += 1
		end
		print("\n")
	end
	#  Swapping the array elements in given location
	def swap_data(arr, first, second)
	
		temp = arr[first]
		arr[first] = arr[second]
		arr[second] = temp
	end
	#  Perform the insertion sort in given array
	def insertion_sort(arr, size)
	
		i = 0
		j = 0
		while (i < size - 1)
		
			j = i + 1
			while (j > 0 && arr[j - 1] > arr[j])
			
				# Swap array element
				self.swap_data(arr, j, j - 1)
				j -= 1
			end
			i += 1
		end
	end
	def partition(arr, low, high)
	
		# Set the high index element to its proper sorted position
		pv = arr[high]
		i = low - 1
		j = low
		while (j < high)
		
			if (arr[j] < pv)
			
				i += 1
				self.swap_data(arr, i, j)
			end
			j += 1
		end
		# set the high index value to its sorted position
		self.swap_data(arr, i + 1, high)
		# returns the next sorting  element location
		return i + 1
	end
	# Perform the quick sort in given array
	def quick_sort(arr, low, high)
	
		if (low < high)
		
			# Get the pivot element
			pv = self.partition(arr, low, high)
			self.quick_sort(arr, low, pv - 1)
			self.quick_sort(arr, pv + 1, high)
		end
	end
	def find_pivot(arr, a, b, c)
	
		if (arr[a] < arr[b] && arr[b] < arr[c])
		
			return b
		elsif(arr[c] <= arr[b] && arr[b] <= arr[a])
		
			return b
		elsif(arr[b] < arr[c] && arr[c] <= arr[a])
		
			return c
		elsif(arr[a] < arr[c] && arr[c] <= arr[b])
		
			return c
		elsif(arr[b] <= arr[a] && arr[a] < arr[c])
		
			return a
		else
		
			return a
		end
	end
	def compare(arr, left, right, root, size)
	
		location = -1
		if (left < size && arr[left] > arr[root])
		
			if (right < size && arr[right] > arr[left])
			
				self.swap_data(arr, right, root)
				location = right
			else
			
				self.swap_data(arr, left, root)
				location = left
			end
		elsif(right < size && arr[right] > arr[root])
		
			self.swap_data(arr, right, root)
			location = right
		end
		return location
	end
	# Perform the operation of heap sort 
	def heap(arr, size, root)
	
		left
		right
		while (root != -1)
		
			left = 2 * root + 1
			right = 2 * root + 2
			root = self.compare(arr, left, right, root, size)
		end
	end
	# Sort array element using heap sort
	def heap_sort(arr, size)
	
		i = (size / 2) - 1
		while (i >= 0)
		
			self.heap(arr, size, i)
			i -= 1
		end
		i = size - 1
		while (i >= 0)
		
			self.swap_data(arr, 0, i)
			self.heap(arr, i, 0)
			i -= 1
		end
	end
	# Perform the introsort in given array
	def execute_introsort(arr, front, tail, deep)
	
		size = tail - front
		if (size < 16)
		
			self.insertion_sort(arr, tail + 1)
		elsif(deep == 0)
		
			# when heap sort are work
			self.heap_sort(arr, tail + 1)
		else
		
			# When executed of quick sort
			pivot = self.find_pivot(arr, front, front + ((tail - front) / 2) + 1, tail)
			self.swap_data(arr, pivot, tail)
			point = self.partition(arr, front, tail)
			self.execute_introsort(arr, front, point - 1, deep - 1)
			self.execute_introsort(arr, point + 1, tail, deep - 1)
		end
	end
	# Handling the request of introsort
	def introsort(arr, size)
	
		deep = (2 * (Math.log(size) / Math.log(2)).floor).to_i
		self.execute_introsort(arr, 0, size - 1, deep)
	end
end
def main()

	obj = MySort.new()
	# Define an array of integers
	arr = [11, 8, 3, 8, 12, -1, -3, 1, 4, 7, 5]
	# Get the size
	size = arr.length
	print("\n Befre Sort :\n")
	obj.display(arr, size)
	# Sort element
	obj.introsort(arr, size)
	print("\n After Sort :\n")
	obj.display(arr, size)
	arr1 = [9, -3, 5, 1, 7, 9, 3, 4, 5, 2, 4, 7, 8, -4, 6, 34, 43, 2, 7, 8, 11, 12, 9, -6, 2]
	# Get the size
	size = arr1.length
	print("\n Before Sort :\n")
	obj.display(arr1, size)
	# Sort element
	obj.introsort(arr1, size)
	print("\n After Sort :\n")
	obj.display(arr1, size)
end
main()

Output

 Befre Sort :
 11 8 3 8 12 -1 -3 1 4 7 5

 After Sort :
 -3 -1 1 3 4 5 7 8 8 11 12

 Before Sort :
 9 -3 5 1 7 9 3 4 5 2 4 7 8 -4 6 34 43 2 7 8 11 12 9 -6 2

 After Sort :
 -6 -4 -3 1 2 2 2 3 4 4 5 5 6 7 7 7 8 8 9 9 9 11 12 34 43
/*
	Scala Program
	Sort array elements by using introsort
*/
class MySort
{
	//Function which is display arr elements
	def display(arr: Array[Int], size: Int): Unit = {
		var i: Int = 0;
		while (i < size)
		{
			print(" " + arr(i));
			i += 1;
		}
		print("\n");
	}
	// Swapping the array elements in given location
	def swap_data(arr: Array[Int], first: Int, second: Int): Unit = {
		var temp: Int = arr(first);
		arr(first) = arr(second);
		arr(second) = temp;
	}
	// Perform the insertion sort in given array
	def insertion_sort(arr: Array[Int], size: Int): Unit = {
		var i: Int = 0;
		var j: Int = 0;
		while (i < size - 1)
		{
			j = i + 1;
			while (j > 0 && arr(j - 1) > arr(j))
			{
				//Swap array element
				swap_data(arr, j, j - 1);
				j -= 1;
			}
			i += 1;
		}
	}
	def partition(arr: Array[Int], low: Int, high: Int): Int = {
		//Set the high index element to its proper sorted position
		var pv: Int = arr(high);
		var i: Int = low - 1;
		var j: Int = low;
		while (j < high)
		{
			if (arr(j) < pv)
			{
				i += 1;
				swap_data(arr, i, j);
			}
			j += 1;
		}
		//set the high index value to its sorted position
		swap_data(arr, i + 1, high);
		//returns the next sorting  element location
		return i + 1;
	}
	//Perform the quick sort in given array
	def quick_sort(arr: Array[Int], low: Int, high: Int): Unit = {
		if (low < high)
		{
			//Get the pivot element
			var pv: Int = partition(arr, low, high);
			quick_sort(arr, low, pv - 1);
			quick_sort(arr, pv + 1, high);
		}
	}
	def find_pivot(arr: Array[Int], a: Int, b: Int, c: Int): Int = {
		if (arr(a) < arr(b) && arr(b) < arr(c))
		{
			return b;
		}
		else if (arr(c) <= arr(b) && arr(b) <= arr(a))
		{
			return b;
		}
		else if (arr(b) < arr(c) && arr(c) <= arr(a))
		{
			return c;
		}
		else if (arr(a) < arr(c) && arr(c) <= arr(b))
		{
			return c;
		}
		else if (arr(b) <= arr(a) && arr(a) < arr(c))
		{
			return a;
		}
		else
		{
			return a;
		}
	}
	def compare(arr: Array[Int], left: Int, right: Int, root: Int, size: Int): Int = {
		var location: Int = -1;
		if (left < size && arr(left) > arr(root))
		{
			if (right < size && arr(right) > arr(left))
			{
				swap_data(arr, right, root);
				location = right;
			}
			else
			{
				swap_data(arr, left, root);
				location = left;
			}
		}
		else if (right < size && arr(right) > arr(root))
		{
			swap_data(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform the operation of heap sort 
	def heap(arr: Array[Int], size: Int, root: Int): Unit = {
		var left: Int = 0;
		var right: Int = 0;
        var location = root;
		while (location != -1)
		{
			left = 2 * location + 1;
			right = 2 * location + 2;
			location = compare(arr, left, right, location, size);
		}
	}
	//Sort array element using heap sort
	def heap_sort(arr: Array[Int], size: Int): Unit = {
		var i: Int = ((size / 2).toInt) - 1;
		while (i >= 0)
		{
			heap(arr, size, i);
			i -= 1;
		}
		i = size - 1;
		while (i >= 0)
		{
			swap_data(arr, 0, i);
			heap(arr, i, 0);
			i -= 1;
		}
	}
	//Perform the introsort in given array
	def execute_introsort(arr: Array[Int], front: Int, tail: Int, deep: Int): Unit = {
		var size: Int = tail - front;
		if (size < 16)
		{
			insertion_sort(arr, tail + 1);
		}
		else if (deep == 0)
		{
			//when heap sort are work
			heap_sort(arr, tail + 1);
		}
		else
		{
			//When executed of quick sort
			var pivot: Int = find_pivot(arr, front, front + (((tail - front) / 2).toInt) + 1, tail);
			swap_data(arr, pivot, tail);
			var point: Int = partition(arr, front, tail);
			execute_introsort(arr, front, point - 1, deep - 1);
			execute_introsort(arr, point + 1, tail, deep - 1);
		}
	}
	//Handling the request of introsort
	def introsort(arr: Array[Int], size: Int): Unit = {
		val deep : Int = (2 * Math.floor(Math.log(size) / Math.log(2))).toInt;
		execute_introsort(arr, 0, size - 1, deep);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var obj: MySort = new MySort();
		//Define an array of integers
		var arr: Array[Int] = Array(11, 8, 3, 8, 12, -1, -3, 1, 4, 7, 5);
		//Get the size
		var size: Int = arr.length;
		print("\n Befre Sort :\n");
		obj.display(arr, size);
		//Sort element
		obj.introsort(arr, size);
		print("\n After Sort :\n");
		obj.display(arr, size);
		var arr1: Array[Int] = Array(9, -3, 5, 1, 7, 9, 3, 4, 5, 2, 4, 7, 8, -4, 6, 34, 43, 2, 7, 8, 11, 12, 9, -6, 2);
		//Get the size
		size = arr1.length;
		print("\n Before Sort :\n");
		obj.display(arr1, size);
		//Sort element
		obj.introsort(arr1, size);
		print("\n After Sort :\n");
		obj.display(arr1, size);
	}
}

Output

 Befre Sort :
 11 8 3 8 12 -1 -3 1 4 7 5

 After Sort :
 -3 -1 1 3 4 5 7 8 8 11 12

 Before Sort :
 9 -3 5 1 7 9 3 4 5 2 4 7 8 -4 6 34 43 2 7 8 11 12 9 -6 2

 After Sort :
 -6 -4 -3 1 2 2 2 3 4 4 5 5 6 7 7 7 8 8 9 9 9 11 12 34 43
import Foundation
/*
	Swift Program
	Sort array elements by using introsort
*/
class MySort
{
	//Function which is display arr elements
	func display(_ arr: [Int], _ size: Int)
	{
		var i: Int = 0;
		while (i < size)
		{
			print(" ", arr[i], terminator: "");
			i += 1;
		}
		print(terminator: "\n");
	}
	// Swapping the array elements in given location
	func swap_data(_ arr: inout[Int], _ first: Int, _ second: Int)
	{
		let temp: Int = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}
	// Perform the insertion sort in given array
	func insertion_sort(_ arr:inout [Int], _ size: Int)
	{
		var i: Int = 0;
		var j: Int = 0;
		while (i < size - 1)
		{
			j = i + 1;
			while (j > 0 && arr[j - 1] > arr[j])
			{
				//Swap array element
				self.swap_data(&arr, j, j - 1);
				j -= 1;
			}
			i += 1;
		}
	}
	func partition(_ arr: inout[Int], _ low: Int, _ high: Int) -> Int
	{
		//Set the high index element to its proper sorted position
		let pv: Int = arr[high];
		var i: Int = low - 1;
		var j: Int = low;
		while (j < high)
		{
			if (arr[j] < pv)
			{
				i += 1;
				self.swap_data(&arr, i, j);
			}
			j += 1;
		}
		//set the high index value to its sorted position
		self.swap_data(&arr, i + 1, high);
		//returns the next sorting  element location
		return i + 1;
	}
	//Perform the quick sort in given array
	func quick_sort(_ arr: inout[Int], _ low: Int, _ high: Int)
	{
		if (low < high)
		{
			//Get the pivot element
			let pv: Int = self.partition(&arr, low, high);
			self.quick_sort(&arr, low, pv - 1);
			self.quick_sort(&arr, pv + 1, high);
		}
	}
	func find_pivot(_ arr: [Int], _ a: Int, _ b: Int, _ c: Int) -> Int
	{
		if (arr[a] < arr[b] && arr[b] < arr[c])
		{
			return b;
		}
		else if (arr[c] <= arr[b] && arr[b] <= arr[a])
		{
			return b;
		}
		else if (arr[b] < arr[c] && arr[c] <= arr[a])
		{
			return c;
		}
		else if (arr[a] < arr[c] && arr[c] <= arr[b])
		{
			return c;
		}
		else if (arr[b] <= arr[a] && arr[a] < arr[c])
		{
			return a;
		}
		else
		{
			return a;
		}
	}
	func compare(_ arr: inout[Int], _ left: Int, _ right: Int, _ root: Int, _ size: Int) -> Int
	{
		var location: Int = -1;
		if (left < size && arr[left] > arr[root])
		{
			if (right < size && arr[right] > arr[left])
			{
				self.swap_data(&arr, right, root);
				location = right;
			}
			else
			{
				self.swap_data(&arr, left, root);
				location = left;
			}
		}
		else if (right < size && arr[right] > arr[root])
		{
			self.swap_data(&arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform the operation of heap sort 
	func heap(_ arr: inout[Int], _ size: Int, _ root:  Int)
	{
		var left: Int;
		var right: Int;
      	var location : Int = root;
		while (location != -1)
		{
			left = 2 * location + 1;
			right = 2 * location + 2;
			location = self.compare(&arr, left, right, location, size);
		}
	}
	//Sort array element using heap sort
	func heap_sort(_ arr: inout[Int], _ size: Int)
	{
		var i: Int = (size / 2) - 1;
		while (i >= 0)
		{
			self.heap(&arr, size, i);
			i -= 1;
		}
		i = size - 1;
		while (i >= 0)
		{
			self.swap_data(&arr, 0, i);
			self.heap(&arr, i, 0);
			i -= 1;
		}
	}
	//Perform the introsort in given array
	func execute_introsort(_ arr: inout [Int], _ front: Int, _ tail: Int, _ deep: Int)
	{
		let size: Int = tail - front;
		if (size < 16)
		{
			self.insertion_sort(&arr, tail + 1);
		}
		else if (deep == 0)
		{
			//when heap sort are work
			self.heap_sort(&arr, tail + 1);
		}
		else
		{
			//When executed of quick sort
			let pivot: Int = self.find_pivot(arr, front, front + ((tail - front) / 2) + 1, tail);
			self.swap_data(&arr, pivot, tail);
			let point: Int = self.partition(&arr, front, tail);
			self.execute_introsort(&arr, front, point - 1, deep - 1);
			self.execute_introsort(&arr, point + 1, tail, deep - 1);
		}
	}
	//Handling the request of introsort
	func introsort(_ arr: inout[Int], _ size: Int)
	{
		let deep: Int = Int(2 * log2(Double(size)));
	self.execute_introsort(&arr, 0, size - 1, deep);
}
}
func main()
{
	let obj: MySort = MySort();
	//Define an array of integers
	var arr: [Int] = [11, 8, 3, 8, 12, -1, -3, 1, 4, 7, 5];
	//Get the size
	var size: Int = arr.count;
	print("\n Befre Sort :");
	obj.display(arr, size);
	//Sort element
	obj.introsort(&arr, size);
	print("\n After Sort :");
	obj.display(arr, size);
	var arr1: [Int] = [9, -3, 5, 1, 7, 9, 3, 4, 5, 2, 4, 7, 8, -4, 6, 34, 43, 2, 7, 8, 11, 12, 9, -6, 2];
	//Get the size
	size = arr1.count;
	print("\n Before Sort :");
	obj.display(arr1, size);
	//Sort element
	obj.introsort(&arr1, size);
	print("\n After Sort :");
	obj.display(arr1, size);
}
main();

Output

 Befre Sort :
  11  8  3  8  12  -1  -3  1  4  7  5

 After Sort :
  -3  -1  1  3  4  5  7  8  8  11  12

 Before Sort :
  9  -3  5  1  7  9  3  4  5  2  4  7  8  -4  6  34  43  2  7  8  11  12  9  -6  2

 After Sort :
  -6  -4  -3  1  2  2  2  3  4  4  5  5  6  7  7  7  8  8  9  9  9  11  12  34  43


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