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Find most frequent element in an array by using sort

Here given code implementation process.

/*
   Java Program for
   Find most frequent element in an array by using sort
*/
import java.util.Arrays;
public class Occurrence
{
	// Display array elements
	public void display(int[] arr, int n)
	{
		for (int i = 0; i < n; ++i)
		{
			System.out.print(" " + arr[i]);
		}
		System.out.print("\n");
	}
	public void mostFrequentElement(int[] arr, int n)
	{
		// First sort given array elements
		Arrays.sort(arr);
		display(arr, n);
		// Define some auxiliary variable
		int result = arr[0];
		int count = 1;
		int max = 1;
		// Execute the loop in range of 1..n
		for (int i = 1; i < n; ++i)
		{
			if (arr[i] == arr[i - 1])
			{
				// When consecutive elements are similar
				count++;
			}
			else
			{
				// Reset counter value
				count = 1;
			}
			if (count > max)
			{
				// Get resultant element
				result = arr[i - 1];
				max = count;
			}
		}
		System.out.println(" Result : " + result);
	}
	public static void main(String[] args)
	{
		Occurrence task = new Occurrence();
		int[] arr = {
			6 , 6 , 2 , -9 , 1 , 2 , 2 , -9 , 2 , -9
		};
		int n = arr.length;
		task.mostFrequentElement(arr, n);
	}
}

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
// Include header file
#include <iostream>
#include <algorithm>
using namespace std;
/*
   C++ Program for
   Find most frequent element in an array by using sort
*/
class Occurrence
{
	public:
		// Display array elements
		void display(int arr[], int n)
		{
			for (int i = 0; i < n; ++i)
			{
				cout << " " << arr[i];
			}
			cout << "\n";
		}
	void mostFrequentElement(int arr[], int n)
	{
		// First sort given array elements
		sort(arr, arr + n);
		this->display(arr, n);
		// Define some auxiliary variable
		int result = arr[0];
		int count = 1;
		int max = 1;
		// Execute the loop in range of 1..n
		for (int i = 1; i < n; ++i)
		{
			if (arr[i] == arr[i - 1])
			{
				// When consecutive elements are similar
				count++;
			}
			else
			{
				// Reset counter value
				count = 1;
			}
			if (count > max)
			{
				// Get resultant element
				result = arr[i - 1];
				max = count;
			}
		}
		cout << " Result : " << result << endl;
	}
};
int main()
{
	Occurrence *task = new Occurrence();
	int arr[] = {
		6 , 6 , 2 , -9 , 1 , 2 , 2 , -9 , 2 , -9
	};
	int n = sizeof(arr) / sizeof(arr[0]);
	task->mostFrequentElement(arr, n);
	return 0;
}

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
// Include namespace system
using System;
/*
   Csharp Program for
   Find most frequent element in an array by using sort
*/
public class Occurrence
{
	// Display array elements
	public void display(int[] arr, int n)
	{
		for (int i = 0; i < n; ++i)
		{
			Console.Write(" " + arr[i]);
		}
		Console.Write("\n");
	}
	public void mostFrequentElement(int[] arr, int n)
	{
		// First sort given array elements
		Array.Sort(arr);
		this.display(arr, n);
		// Define some auxiliary variable
		int result = arr[0];
		int count = 1;
		int max = 1;
		// Execute the loop in range of 1..n
		for (int i = 1; i < n; ++i)
		{
			if (arr[i] == arr[i - 1])
			{
				// When consecutive elements are similar
				count++;
			}
			else
			{
				// Reset counter value
				count = 1;
			}
			if (count > max)
			{
				// Get resultant element
				result = arr[i - 1];
				max = count;
			}
		}
		Console.WriteLine(" Result : " + result);
	}
	public static void Main(String[] args)
	{
		Occurrence task = new Occurrence();
		int[] arr = {
			6 , 6 , 2 , -9 , 1 , 2 , 2 , -9 , 2 , -9
		};
		int n = arr.Length;
		task.mostFrequentElement(arr, n);
	}
}

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
package main
import "sort"
import "fmt"
/*
   Go Program for
   Find most frequent element in an array by using sort
*/

// Display array elements
func display(arr[] int, n int) {
	for i := 0 ; i < n ; i++ {
		fmt.Print(" ", arr[i])
	}
	fmt.Print("\n")
}
func mostFrequentElement(arr[] int, n int) {
	// First sort given array elements
	sort.Ints(arr)
	display(arr, n)
	// Define some auxiliary variable
	var result int = arr[0]
	var count int = 1
	var max int = 1
	// Execute the loop in range of 1..n
	for i := 1 ; i < n ; i++ {
		if arr[i] == arr[i - 1] {
			// When consecutive elements are similar
			count++
		} else {
			// Reset counter value
			count = 1
		}
		if count > max {
			// Get resultant element
			result = arr[i - 1]
			max = count
		}
	}
	fmt.Println(" Result : ", result)
}
func main() {

	var arr = [] int { 6 , 6 , 2 , -9 , 1 , 2 , 2 , -9 , 2 , -9 }
	var n int = len(arr)
	mostFrequentElement(arr, n)
}

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
<?php
/*
   Php Program for
   Find most frequent element in an array by using sort
*/
class Occurrence
{
	// Display array elements
	public	function display($arr, $n)
	{
		for ($i = 0; $i < $n; ++$i)
		{
			echo(" ".$arr[$i]);
		}
		echo("\n");
	}
	public	function mostFrequentElement($arr, $n)
	{
		// First sort given array elements
		sort($arr);
		$this->display($arr, $n);
		// Define some auxiliary variable
		$result = $arr[0];
		$count = 1;
		$max = 1;
		// Execute the loop in range of 1..n
		for ($i = 1; $i < $n; ++$i)
		{
			if ($arr[$i] == $arr[$i - 1])
			{
				// When consecutive elements are similar
				$count++;
			}
			else
			{
				// Reset counter value
				$count = 1;
			}
			if ($count > $max)
			{
				// Get resultant element
				$result = $arr[$i - 1];
				$max = $count;
			}
		}
		echo(" Result : ".$result."\n");
	}
}

function main()
{
	$task = new Occurrence();
	$arr = array(6, 6, 2, -9, 1, 2, 2, -9, 2, -9);
	$n = count($arr);
	$task->mostFrequentElement($arr, $n);
}
main();

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
/*
   Node JS Program for
   Find most frequent element in an array by using sort
*/
class Occurrence
{
	// Display array elements
	display(arr, n)
	{
		for (var i = 0; i < n; ++i)
		{
			process.stdout.write(" " + arr[i]);
		}
		process.stdout.write("\n");
	}
	mostFrequentElement(arr, n)
	{
		// First sort given array elements
		arr.sort(function(a, b)
		{
			return a - b;
		});
		this.display(arr, n);
		// Define some auxiliary variable
		var result = arr[0];
		var count = 1;
		var max = 1;
		// Execute the loop in range of 1..n
		for (var i = 1; i < n; ++i)
		{
			if (arr[i] == arr[i - 1])
			{
				// When consecutive elements are similar
				count++;
			}
			else
			{
				// Reset counter value
				count = 1;
			}
			if (count > max)
			{
				// Get resultant element
				result = arr[i - 1];
				max = count;
			}
		}
		console.log(" Result : " + result);
	}
}

function main()
{
	var task = new Occurrence();
	var arr = [6, 6, 2, -9, 1, 2, 2, -9, 2, -9];
	var n = arr.length;
	task.mostFrequentElement(arr, n);
}
main();

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
#   Python 3 Program for
#   Find most frequent element in an array by using sort
class Occurrence :
	#  Display list elements
	def display(self, arr, n) :
		i = 0
		while (i < n) :
			print(" ", arr[i], end = "")
			i += 1
		
		print(end = "\n")
	
	def mostFrequentElement(self, arr, n) :
		#  First sort given list elements
		arr.sort()
		self.display(arr, n)
		#  Define some auxiliary variable
		result = arr[0]
		count = 1
		max = 1
		i = 1
		#  Execute the loop in range of 1..n
		while (i < n) :
			if (arr[i] == arr[i - 1]) :
				#  When consecutive elements are similar
				count += 1
			else :
				#  Reset counter value
				count = 1
			
			if (count > max) :
				#  Get resultant element
				result = arr[i - 1]
				max = count
			
			i += 1
		
		print(" Result : ", result)
	

def main() :
	task = Occurrence()
	arr = [6, 6, 2, -9, 1, 2, 2, -9, 2, -9]
	n = len(arr)
	task.mostFrequentElement(arr, n)

if __name__ == "__main__": main()

Output

  -9  -9  -9  1  2  2  2  2  6  6
 Result :  2
#   Ruby Program for
#   Find most frequent element in an array by using sort
class Occurrence 
	#  Display array elements
	def display(arr, n) 
		i = 0
		while (i < n) 
			print(" ", arr[i])
			i += 1
		end

		print("\n")
	end

	def mostFrequentElement(arr, n) 
		#  First sort given array elements
		arr = arr.sort
		self.display(arr, n)
		#  Define some auxiliary variable
		result = arr[0]
		count = 1
		max = 1
		i = 1
		#  Execute the loop in range of 1..n
		while (i < n) 
			if (arr[i] == arr[i - 1]) 
				#  When consecutive elements are similar
				count += 1
			else
 
				#  Reset counter value
				count = 1
			end

			if (count > max) 
				#  Get resultant element
				result = arr[i - 1]
				max = count
			end

			i += 1
		end

		print(" Result : ", result, "\n")
	end

end

def main() 
	task = Occurrence.new()
	arr = [6, 6, 2, -9, 1, 2, 2, -9, 2, -9]
	n = arr.length
	task.mostFrequentElement(arr, n)
end

main()

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2

import scala.collection.mutable._;
/*
   Scala Program for
   Find most frequent element in an array by using sort
*/
class Occurrence()
{
	// Display array elements
	def display(arr: Array[Int], n: Int): Unit = {
		var i: Int = 0;
		while (i < n)
		{
			print(" " + arr(i));
			i += 1;
		}
		print("\n");
	}
	def mostFrequentElement(arr: Array[Int], n: Int): Unit = {
		// First sort given array elements
		scala.util.Sorting.quickSort(arr)
		display(arr, n);
		// Define some auxiliary variable
		var result: Int = arr(0);
		var count: Int = 1;
		var max: Int = 1;
		var i: Int = 1;
		// Execute the loop in range of 1..n
		while (i < n)
		{
			if (arr(i) == arr(i - 1))
			{
				// When consecutive elements are similar
				count += 1;
			}
			else
			{
				// Reset counter value
				count = 1;
			}
			if (count > max)
			{
				// Get resultant element
				result = arr(i - 1);
				max = count;
			}
			i += 1;
		}
		println(" Result : " + result);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: Occurrence = new Occurrence();
		var arr: Array[Int] = Array(6, 6, 2, -9, 1, 2, 2, -9, 2, -9);
		var n: Int = arr.length;
		task.mostFrequentElement(arr, n);
	}
}

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
import Foundation;
/*
   Swift 4 Program for
   Find most frequent element in an array by using sort
*/
class Occurrence
{
	// Display array elements
	func display(_ arr: [Int], _ n: Int)
	{
		var i: Int = 0;
		while (i < n)
		{
			print(" ", arr[i], terminator: "");
			i += 1;
		}
		print(terminator: "\n");
	}
	func mostFrequentElement(_ arr: inout[Int], _ n: Int)
	{
		// First sort given array elements
		arr = arr.sorted();
		self.display(arr, n);
		// Define some auxiliary variable
		var result: Int = arr[0];
		var count: Int = 1;
		var max: Int = 1;
		var i: Int = 1;
		// Execute the loop in range of 1..n
		while (i < n)
		{
			if (arr[i] == arr[i - 1])
			{
				// When consecutive elements are similar
				count += 1;
			}
			else
			{
				// Reset counter value
				count = 1;
			}
			if (count > max)
			{
				// Get resultant element
				result = arr[i - 1];
				max = count;
			}
			i += 1;
		}
		print(" Result : ", result);
	}
}
func main()
{
	let task: Occurrence = Occurrence();
	var arr: [Int] = [6, 6, 2, -9, 1, 2, 2, -9, 2, -9];
	let n: Int = arr.count;
	task.mostFrequentElement(&arr, n);
}
main();

Output

  -9  -9  -9  1  2  2  2  2  6  6
 Result :  2
/*
   Kotlin Program for
   Find most frequent element in an array by using sort
*/
class Occurrence
{
	// Display array elements
	fun display(arr: Array < Int > , n: Int): Unit
	{
		var i: Int = 0;
		while (i < n)
		{
			print(" " + arr[i]);
			i += 1;
		}
		print("\n");
	}
	fun mostFrequentElement(arr: Array < Int > , n: Int): Unit
	{
		// First sort given array elements
		arr.sort();
		this.display(arr, n);
		// Define some auxiliary variable
		var result: Int = arr[0];
		var count: Int = 1;
		var max: Int = 1;
		var i: Int = 1;
		// Execute the loop in range of 1..n
		while (i < n)
		{
			if (arr[i] == arr[i - 1])
			{
				// When consecutive elements are similar
				count += 1;
			}
			else
			{
				// Reset counter value
				count = 1;
			}
			if (count > max)
			{
				// Get resultant element
				result = arr[i - 1];
				max = count;
			}
			i += 1;
		}
		println(" Result : " + result);
	}
}
fun main(args: Array < String > ): Unit
{
	val task: Occurrence = Occurrence();
	val arr: Array < Int > = arrayOf(6, 6, 2, -9, 1, 2, 2, -9, 2, -9);
	val n: Int = arr.count();
	task.mostFrequentElement(arr, n);
}

Output

 -9 -9 -9 1 2 2 2 2 6 6
 Result : 2
Last updated on by Kalkicode




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