Find k smallest elements in array

Here given code implementation process.

//C Program
//Find k smallest elements in array
#include <stdio.h>

//Swap two element in array
void swap(int arr[],int first,int second)
{
  int temp=arr[first];
  arr[first]=arr[second];
  arr[second]=temp;
}
//Check the properties of max heap
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(arr,right,root);
      location = right;
    }
    else
    {
      swap(arr,left,root);
      location = left;
    }
  }
  else if(right < size && arr[right] > arr[root])
  {
    swap(arr,right,root);
    location = right;
  }
  return location;
}
//Perform max heap sort
void heap(int arr[],int size,int root)
{
  //Get location of left and right child
  int left  = 2*root+1;
  int right = 2*root+2;
 
  int next_in = compare(arr, left, right, root, size);
 
  if(next_in != -1)
  {
    //When array is modified then check other array elements
    heap(arr,size,next_in);
  }
}
//Display array elements
void print_data(int arr[],int size)
{
  printf("\n");
  for(int i = 0; i < size; i++)
  {
    printf("%3d",arr[i] );
  }
}

//Finding the all k smallest element in array
void k_smallest(int arr[],int size,int k)
{

  if(k>size)
  {
    return;
  }
  //Auxiliary memory that will be used to store array elements
  int auxiliary[size];

  //set initial values into the auxiliary array
  for (int i = 0; i < size; ++i)
  {
    auxiliary[i] = arr[i];
  }


  for (int i = (size/2)-1; i >= 0; i--)
  {
    heap(auxiliary,size,i);
  }


  for (int i = size-1; i >= 0; i--)
  {
    //Swap large element at the end
    swap(auxiliary, 0, i);
    heap(auxiliary, i, 0);
  }


  printf("\n  %d Smallest Element \n",k);

  //Display resultant elements
  for (int i = 0; i < k; ++i)
  {
    printf("  %d",auxiliary[i] );
  }
  printf("\n");
}
int main()
{
  //Define collection of array elements
  int arr[] = {6, 8, 2, 7,14,  1, 3, 8, 21, 11, 12 ,5};

  //Get the size of array
  int size = sizeof(arr)/sizeof(arr[0]);

  //number of smallest element
  int k=3;

  print_data(arr,size);

  k_smallest(arr,size,k);
 
  return 0;
}

Output

  6  8  2  7 14  1  3  8 21 11 12  5
  3 Smallest Element
  1  2  3
/*
  C++ Program
  Find k smallest elements in array
*/
#include<iostream>
using namespace std;

class MyHeap {
	public:

    //Swap two element in array
    void swap(int arr[], int first, int second) {
      int temp = arr[first];
      arr[first] = arr[second];
      arr[second] = temp;
    }
	//Check the properties of max heap
	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(arr, right, root);
				location = right;
			} else {
				this->swap(arr, left, root);
				location = left;
			}
		} else
		if (right < size && arr[right] > arr[root]) {
			this->swap(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform max heap sort
	void heap(int arr[], int size, int root) {
		//Get location of left and right child
		int left = 2 *root + 1;
		int right = 2 *root + 2;
		int next_in = this->compare(arr, left, right, root, size);
		if (next_in != -1) {
			//When array is modified then check other array elements
			this->heap(arr, size, next_in);
		}
	}
	//Display array elements
	void print_data(int arr[], int size) {
		for (int i = 0; i < size; i++) {
			cout << " " << arr[i];
		}
		cout << "\n";
	}
	//Finding the all k smallest element in array
	void k_smallest(int arr[], int size, int k) {
		if (k > size) {
			return;
		}
		int *auxiliary = new int[size];
		//set initial values into the auxiliary array

		for (int i = 0; i < size; ++i) {
			auxiliary[i] = arr[i];
		}
		for (int i = (size / 2) - 1; i >= 0; i--) {
			this->heap(auxiliary, size, i);
		}
		for (int i = size - 1; i >= 0; i--) {
			//Swap large element at the end
			this->swap(auxiliary, 0, i);
			this->heap(auxiliary, i, 0);
		}
		cout << " " << k << " Smallest Element \n";
		//Display resultant elements

		for (int i = 0; i < k; ++i) {
			cout << " " << auxiliary[i];
		}
		cout << "\n";
	}
};
int main() {
	MyHeap obj = MyHeap();
	int arr[] = {
		6,
		8,
		2,
		7,
		14,
		1,
		3,
		8,
		21,
		11,
		12,
		5
	};
	//Get the size of array
	int size = sizeof(arr) / sizeof(arr[0]);
	//Number of smallest element
	int k = 3;
	//Display array elements
	obj.print_data(arr, size);
	obj.k_smallest(arr, size, k);
	return 0;
}

Output

 6 8 2 7 14 1 3 8 21 11 12 5
 3 Smallest Element
 1 2 3
/*
  Java Program
  Find k smallest elements in array
*/
public class MyHeap {

  //Swap two element in array
  public void swap(int []arr,int first,int second)
  {
    int temp=arr[first];
    arr[first]=arr[second];
    arr[second]=temp;
  }
  //Check the properties of max heap
  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(arr,right,root);
        location = right;
      }
      else
      {
        swap(arr,left,root);
        location = left;
      }
    }
    else if(right < size && arr[right] > arr[root])
    {
      swap(arr,right,root);
      location = right;
    }
    return location;
  }
  //Perform max heap sort
  public void heap(int []arr,int size,int root)
  {
    //Get location of left and right child
    int left  = 2*root+1;
    int right = 2*root+2;
   
    int next_in = compare(arr, left, right, root, size);
   
    if(next_in != -1)
    {
      //When array is modified then check other array elements
      heap(arr,size,next_in);
    }
  }
  //Display array elements
  public void print_data(int []arr,int size)
  {
    
    for(int i = 0; i < size; i++)
    {
      System.out.print("  "+arr[i] );
    }
    System.out.print("\n");
  }

  //Finding the all k smallest element in array
  public void k_smallest(int []arr,int size,int k)
  {

    if(k>size)
    {
      return;
    }
    //Auxiliary memory that will be used to store array elements
    int []auxiliary= new int[size];

    //set initial values into the auxiliary array
    for (int i = 0; i < size; ++i)
    {
      auxiliary[i] = arr[i];
    }

    for (int i = (size/2)-1; i >= 0; i--)
    {
      heap(auxiliary,size,i);
    }

    for (int i = size-1; i >= 0; i--)
    {
      //Swap large element at the end
      swap(auxiliary, 0, i);
      heap(auxiliary, i, 0);
    }

    System.out.print("  "+k+" Smallest Element \n");

    //Display resultant elements
    for (int i = 0; i <k; ++i)
    {
      System.out.print("  "+auxiliary[i] );
    }
    System.out.print("\n");
  }
  public static void main(String[] args) {
    
    MyHeap obj = new MyHeap();
    
    //Define Collection of array elements
    int []arr =  {6, 8, 2, 7,14,  1, 3, 8, 21, 11, 12 ,5};

    //Get the size of array
    int size = arr.length;
    
    //Number of smallest element
    int k=3;

    //Display array elements
    obj.print_data(arr,size);

    obj.k_smallest(arr,size,k);
  }
}

Output

 6 8 2 7 14 1 3 8 21 11 12 5
 3 Smallest Element
  1  2  3
/*
  C# Program
  Find k smallest elements in array
*/
using System;

public class MyHeap {
	//Swap two element in array
	public void swap(int[] arr, int first, int second) {
		int temp = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}
	//Check the properties of max heap
	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(arr, right, root);
				location = right;
			} else {
				swap(arr, left, root);
				location = left;
			}
		} else
		if (right < size && arr[right] > arr[root]) {
			swap(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform max heap sort
	public void heap(int[] arr, int size, int root) {
		//Get location of left and right child
		int left = 2 * root + 1;
		int right = 2 * root + 2;
		int next_in = compare(arr, left, right, root, size);
		if (next_in != -1) {
			heap(arr, size, next_in);
		}
	}
	//Display array elements
	public void print_data(int[] arr, int size) {
		for (int i = 0; i < size; i++) {
			Console.Write(" " + arr[i]);
		}
		Console.Write("\n");
	}
	//Finding the all k smallest element in array
	public void k_smallest(int[] arr, int size, int k) {
		if (k > size) {
			return;
		}
		int[]
		//Auxiliary memory that will be used to store array elements
		auxiliary = new int[size];
		//set initial values into the auxiliary array

		for (int i = 0; i < size; ++i) {
			auxiliary[i] = arr[i];
		}
		for (int i = (size / 2) - 1; i >= 0; i--) {
			heap(auxiliary, size, i);
		}
		for (int i = size - 1; i >= 0; i--) {
			swap(auxiliary, 0, i);
			heap(auxiliary, i, 0);
		}
		Console.Write(" " + k + " Smallest Element \n");
		//Display resultant elements

		for (int i = 0; i < k; ++i) {
			Console.Write(" " + auxiliary[i]);
		}
		Console.Write("\n");
	}
	public static void Main(String[] args) {
		MyHeap obj = new MyHeap();
		int[]
		//Define Collection of array elements
		arr = {
			6,
			8,
			2,
			7,
			14,
			1,
			3,
			8,
			21,
			11,
			12,
			5
		};
		//Get the size of array
		int size = arr.Length;
		//Number of smallest element
		int k = 3;
		obj.print_data(arr, size);
		obj.k_smallest(arr, size, k);
	}
}

Output

 6 8 2 7 14 1 3 8 21 11 12 5
 3 Smallest Element
 1 2 3
<?php
/*
  Php Program
  Find k smallest elements in array
*/
class MyHeap {
	//Swap two element in array
	public 	function swap(&$arr, $first, $second) {
		$temp = $arr[$first];
		$arr[$first] = $arr[$second];
		$arr[$second] = $temp;
	}
	//Check the properties of max heap
	public 	function compare(&$arr, $left, $right, $root, $size) {
		$location = -1;
		if ($left < $size && $arr[$left] > $arr[$root]) {
			if ($right < $size && $arr[$right] > $arr[$left]) {
				$this->swap($arr, $right, $root);
				$location = $right;
			} else {
				$this->swap($arr, $left, $root);
				$location = $left;
			}
		} else
		if ($right < $size && $arr[$right] > $arr[$root]) {
			$this->swap($arr, $right, $root);
			$location = $right;
		}
		return $location;
	}
	//Perform max heap sort
	public 	function heap(&$arr, $size, $root) {
		//Get location of left and right child
		$left = 2 *$root + 1;
		$right = 2 *$root + 2;
		$next_in = $this->compare($arr, $left, $right, $root, $size);
		if ($next_in != -1) {
			//When array is modified then check other array elements
			$this->heap($arr, $size, $next_in);
		}
	}
	//Display array elements
	public 	function print_data($arr, $size) {
		for ($i = 0; $i < $size; $i++) {
			echo(" ". $arr[$i]);
		}
		echo("\n");
	}
	//Finding the all k smallest element in array
	public 	function k_smallest($arr, $size, $k) {
		if ($k > $size) {
			return;
		}
		//Auxiliary memory that will be used to store array elements
		$auxiliary = array_fill(0, $size, 0);
		//set initial values into the auxiliary array
		for ($i = 0; $i < $size; ++$i) {
			$auxiliary[$i] = $arr[$i];
		}
		for ($i = (intval($size / 2)) - 1; $i >= 0; $i--) {
			$this->heap($auxiliary, $size, $i);
		}
		for ($i = $size - 1; $i >= 0; $i--) {
			//Swap large element at the end
			$this->swap($auxiliary, 0, $i);
			$this->heap($auxiliary, $i, 0);
		}
		echo(" ". $k ." Smallest Element \n");
		//Display resultant elements
		for ($i = 0; $i < $k; ++$i) {
			echo(" ". $auxiliary[$i]);
		}
		echo("\n");
	}
}

function main() {
	$obj = new MyHeap();
	//Define Collection of array elements
	$arr = array(6, 8, 2, 7, 14, 1, 3, 8, 21, 11, 12, 5);
	//Get the size of array
	$size = count($arr);
	//Number of smallest element
	$k = 3;
	//Display array elements
	$obj->print_data($arr, $size);
	$obj->k_smallest($arr, $size, $k);

}
main();

Output

 6 8 2 7 14 1 3 8 21 11 12 5
 3 Smallest Element
 1 2 3
/*
  Node Js Program
  Find k smallest elements in array
*/
class MyHeap {
	//Swap two element in array
	swap(arr, first, second) {
		var temp = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}

	//Check the properties of max heap
	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(arr, right, root);
				location = right;
			} else {
				this.swap(arr, left, root);
				location = left;
			}
		} else
		if (right < size && arr[right] > arr[root]) {
			this.swap(arr, right, root);
			location = right;
		}

		return location;
	}

	//Perform max heap sort
	heap(arr, size, root) {
		//Get location of left and right child
		var left = 2 *root + 1;
		var right = 2 *root + 2;
		var next_in = this.compare(arr, left, right, root, size);
		if (next_in != -1) {
			//When array is modified then check other array elements
			this.heap(arr, size, next_in);
		}
	}

	//Display array elements
	print_data(arr, size) {
		for (var i = 0; i < size; i++) {
			process.stdout.write(" " + arr[i]);
		}

		process.stdout.write("\n");
	}

	//Finding the all k smallest element in array
	k_smallest(arr, size, k) {
		if (k > size) {
			return;
		}

		//Auxiliary memory that will be used to store array elements
		var auxiliary = Array(size).fill(0);
		//set initial values into the auxiliary array

		for (var i = 0; i < size; ++i) {
			auxiliary[i] = arr[i];
		}

		for (var i = (parseInt(size / 2)) - 1; i >= 0; i--) {
			this.heap(auxiliary, size, i);
		}

		for (var i = size - 1; i >= 0; i--) {
			//Swap large element at the end
			this.swap(auxiliary, 0, i);
			this.heap(auxiliary, i, 0);
		}

		process.stdout.write(" " + k + " Smallest Element \n");
		//Display resultant elements

		for (var i = 0; i < k; ++i) {
			process.stdout.write(" " + auxiliary[i]);
		}

		process.stdout.write("\n");
	}
}

function main(args) {
	var obj = new MyHeap();
	//Define Collection of array elements
	var arr = [6, 8, 2, 7, 14, 1, 3, 8, 21, 11, 12, 5];
	//Get the size of array
	var size = arr.length;
	//Number of smallest element
	var k = 3;
	//Display array elements
	obj.print_data(arr, size);
	obj.k_smallest(arr, size, k);
}

main();

Output

 6 8 2 7 14 1 3 8 21 11 12 5
 3 Smallest Element
 1 2 3
# Python 3 Program
# Find k smallest elements in array
class MyHeap :
	# Swap two element in array
	def swap(self, arr, first, second) :
		temp = arr[first]
		arr[first] = arr[second]
		arr[second] = temp
	
	# Check the properties of max heap
	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(arr, right, root)
				location = right
			else :
				self.swap(arr, left, root)
				location = left
			
		elif (right < size and arr[right] > arr[root]) :
			self.swap(arr, right, root)
			location = right
		
		return location
	
	# Perform max heap sort
	def heap(self, arr, size, root) :
		left = 2 * root + 1
		right = 2 * root + 2
		next_in = self.compare(arr, left, right, root, size)
		if (next_in != -1) :
			self.heap(arr, size, next_in)
		
	
	# Display array elements
	def print_data(self, arr, size) :
		i = 0
		while (i < size) :
			print(" ", arr[i], end = "")
			i += 1
		
		print("\n", end = "")
	
	# Finding the all k smallest element in array
	def k_smallest(self, arr, size, k) :
		if (k > size) :
			return
		
		auxiliary = [0] * size
		# set initial values into the auxiliary array
		i = 0
		while (i < size) :
			auxiliary[i] = arr[i]
			i += 1
		
		i = (int(size / 2)) - 1
		while (i >= 0) :
			self.heap(auxiliary, size, i)
			i -= 1
		
		i = size - 1
		while (i >= 0) :
			self.swap(auxiliary, 0, i)
			self.heap(auxiliary, i, 0)
			i -= 1
		
		print(" ", k ," Smallest Element \n", end = "")
		# Display resultant elements
		i = 0
		while (i < k) :
			print(" ", auxiliary[i], end = "")
			i += 1
		
		print("\n", end = "")
	

def main() :
	obj = MyHeap()
	# Define Collection of array elements
	arr = [6, 8, 2, 7, 14, 1, 3, 8, 21, 11, 12, 5]
	# Get the size of array
	size = len(arr)
	# Number of smallest element
	k = 3
	# Display array elements
	obj.print_data(arr, size)
	obj.k_smallest(arr, size, k)


if __name__ == "__main__":
	main()

Output

  6  8  2  7  14  1  3  8  21  11  12  5
  3  Smallest Element
  1  2  3
# Ruby Program
# Find k smallest elements in array
class MyHeap 
	 # Swap two element in array
	def swap(arr, first, second) 
		temp = arr[first]
		arr[first] = arr[second]
		arr[second] = temp
	end
	 # Check the properties of max heap
	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(arr, right, root)
				location = right
			else 
				self.swap(arr, left, root)
				location = left
			end
		elsif (right < size && arr[right] > arr[root]) 
			self.swap(arr, right, root)
			location = right
		end
		return location
	end
	 # Perform max heap sort
	def heap(arr, size, root) 
		left = 2 * root + 1
		right = 2 * root + 2
		next_in = self.compare(arr, left, right, root, size)
		if (next_in != -1) 
			self.heap(arr, size, next_in)
		end
	end
	 # Display array elements
	def print_data(arr, size) 
		i = 0
		while (i < size) 
			print(" ", arr[i])
			i += 1
		end
		print("\n")
	end
	 # Finding the all k smallest element in array
	def k_smallest(arr, size, k) 
		if (k > size) 
			return
		end
		auxiliary = Array.new(size, 0)
		 # set initial values into the auxiliary array
		i = 0
		while (i < size) 
			auxiliary[i] = arr[i]
			i += 1
		end
		i = (size / 2) - 1
		while (i >= 0) 
			self.heap(auxiliary, size, i)
			i -= 1
		end
		i = size - 1
		while (i >= 0) 
			self.swap(auxiliary, 0, i)
			self.heap(auxiliary, i, 0)
			i -= 1
		end
		print(" ", k ," Smallest Element \n")
		 # Display resultant elements
		i = 0
		while (i < k) 
			print(" ", auxiliary[i])
			i += 1
		end
		print("\n")
	end
end
def main() 
	obj = MyHeap.new()
	 # Define Collection of array elements
	arr = [6, 8, 2, 7, 14, 1, 3, 8, 21, 11, 12, 5]
	 # Get the size of array
	size = arr.length
	 # Number of smallest element
	k = 3
	 # Display array elements
	obj.print_data(arr, size)
	obj.k_smallest(arr, size, k)
end
main()

Output

 6 8 2 7 14 1 3 8 21 11 12 5
 3 Smallest Element 
 1 2 3
/*
  Scala Program
  Find k smallest elements in array
*/
class MyHeap {
	//Swap two element in array
	def swap(arr: Array[Int], first: Int, second: Int): Unit = {
		val temp: Int = arr(first);
		arr(first) = arr(second);
		arr(second) = temp;
	}
	//Check the properties of max heap
	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)) {
				this.swap(arr, right, root);
				location = right;
			} else {
				this.swap(arr, left, root);
				location = left;
			}
		} else
		if (right < size && arr(right) > arr(root)) {
			this.swap(arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform max heap sort
	def heap(arr: Array[Int], size: Int, root: Int): Unit = {
		val left: Int = 2 * root + 1;
		val right: Int = 2 * root + 2;
		val next_in: Int = this.compare(arr, left, right, root, size);

		if (next_in != -1) {
			this.heap(arr, size, next_in);
		}
	}
	//Display array elements
	def print_data(arr: Array[Int], size: Int): Unit = {
		var i: Int = 0;
		while (i < size) {
			print(" " + arr(i));
			i += 1;
		}
		print("\n");
	}
	//Finding the all k smallest element in array
	def k_smallest(arr: Array[Int], size: Int, k: Int): Unit = {
		if (k > size) {
			return;
		}
		var auxiliary: Array[Int] = Array.fill[Int](size)(0);

        //set initial values into the auxiliary array
        var i: Int = 0;
        while (i < size) {
            auxiliary(i) = arr(i);
            i += 1;
        }
        i = ((size / 2).toInt) - 1;
        while (i >= 0) {
            this.heap(auxiliary, size, i);
            i -= 1;
        }
        i = size - 1;
        while (i >= 0) {
            this.swap(auxiliary, 0, i);
            this.heap(auxiliary, i, 0);
            i -= 1;
        }
        print(" " + k + " Smallest Element \n");

        //Display resultant elements
        i = 0;
        while (i < k) {
            print(" " + auxiliary(i));
            i += 1;
        }
        print("\n");
    }
}
object Main {
	def main(args: Array[String]): Unit = {
		val obj: MyHeap = new MyHeap();

		//Define Collection of array elements
		val arr: Array[Int] = Array(6, 8, 2, 7, 14, 1, 3, 8, 21, 11, 12, 5);

		//Get the size of array
		val size: Int = arr.length;

		//Number of smallest element
		val k: Int = 3;

		//Display array elements
		obj.print_data(arr, size);
		obj.k_smallest(arr, size, k);
	}
}

Output

 6 8 2 7 14 1 3 8 21 11 12 5
 3 Smallest Element
 1 2 3
/*
  Swift Program
  Find k smallest elements in array
*/
class MyHeap {
	//Swap two element in array
	func swap(_ arr: inout [Int], _ first: Int, _ second: Int) {
		let temp: Int = arr[first];
		arr[first] = arr[second];
		arr[second] = temp;
	}
	//Check the properties of max heap
	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(&arr, right, root);
				location = right;
			} else {
				self.swap(&arr, left, root);
				location = left;
			}
		} else
		if (right < size && arr[right] > arr[root]) {
			self.swap(&arr, right, root);
			location = right;
		}
		return location;
	}
	//Perform max heap sort
	func heap(_ arr: inout [Int], _ size: Int, _ root: Int) {
		let left: Int = 2 * root + 1;
		let right: Int = 2 * root + 2;
		let next_in: Int = self.compare(&arr, left, right, root, size);
		if (next_in != -1) {
			self.heap(&arr, size, next_in);
		}
	}
	//Display array elements
	func print_data(_ arr: [Int], _ size: Int) {
		var i: Int = 0;
		while (i < size) {
			print(" ", arr[i], terminator: "");
			i += 1;
		}
		print("\n", terminator: "");
	}
	//Finding the all k smallest element in array
	func k_smallest(_ arr: [Int], _ size: Int, _ k: Int) {
		if (k > size) {
			return;
		}
		var auxiliary: [Int] = Array(repeating: 0, count: size);
        //set initial values into the auxiliary array
        var i: Int = 0;
        while (i < size) {
            auxiliary[i] = arr[i];
            i += 1;
        }
        i = (size / 2) - 1;
        while (i >= 0) {
            self.heap(&auxiliary, size, i);
            i -= 1;
        }
        i = size - 1;
        while (i >= 0) {
            self.swap(&auxiliary, 0, i);
            self.heap(&auxiliary, i, 0);
            i -= 1;
        }
        print(" ", k ," Smallest Element \n", terminator: "");
        //Display resultant elements
        i = 0;
        while (i < k) {
            print(" ", auxiliary[i], terminator: "");
            i += 1;
        }
        print("\n", terminator: "");
    }
}
func main() {
	let obj: MyHeap = MyHeap();
	//Define Collection of array elements
	let arr: [Int] = [6, 8, 2, 7, 14, 1, 3, 8, 21, 11, 12, 5];
	//Get the size of array
	let size: Int = arr.count;
	//Number of smallest element
	let k: Int = 3;
	//Display array elements
	obj.print_data(arr, size);
	obj.k_smallest(arr, size, k);
}
main();

Output

  6  8  2  7  14  1  3  8  21  11  12  5
  3  Smallest Element
  1  2  3

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