Find The Maximum Element Of Each Row In A Matrix

In this problem here I am going to solve maximum element of each row in a matrix.

Suppose there is a matrix, and find out maximum element in each row.

Examples:

Input :  [10, 20, 3]
         [12, 4, 94]
         [6, 3, 210]

Output :
3
4
3

Input : [10, 20, 3, 21]
        [16, 1, 65, 9]
        [17, 57, 3, 20]
Output :
3

1
2

Then Approach: Here approach is very simple.

The idea is to run the loop for no_of_rows basis.

Check each element inside the each row and find the maximum element.

Finally, we print the element. 

Now, see the below implementation:

The Maximum Element Of Each Row In A Matrix In C++

// C++ program to find maximum
// element of each row in a matrix
#include<bits/stdc++.h>
using namespace std;
const int N = 4;


	// Print array element
	void printArray(int result[], int no_of_rows) {
		for (int i = 0; i < no_of_rows; i++) {
			cout<< result[i]<<"\n";
		}

	}

	// Function to get max element
	void maxelement(int no_of_rows, int arr[][N]) {
		int i = 0;
		
		// Initialize max to 0 at beginning
		// of finding max element of each row
		int max = 0;
		int result[no_of_rows];
		while (i < no_of_rows) {
			for (int j = 0; j < N; j++) {
				if (arr[i][j] > max) {
					max = arr[i][j];
				}
			}
			result[i] = max;
			max = 0;
			i++;

		}
		printArray(result,no_of_rows);

	}

	// Driver code
	int main()
	{
		int arr[][N] = { {2, 40, 1, 80},
						{17, 4, 90, 11},
						{96, 34, 22, 10},
						{3, 2, 7, 5} };
	// Calling the function
		maxelement(4, arr);
	}

// This code is contributed by Rajput-Ji

Output:

1
4

22
2

The Maximum Element Of Each Row In A Matrix In Java

// C++ program to find maximum
// element of each row in a matrix
#include<bits/stdc++.h>
using namespace std;
const int N = 4;


	// Print array element
	void printArray(int result[], int no_of_rows) {
		for (int i = 0; i < no_of_rows; i++) {
			cout<< result[i]<<"\n";
		}

	}

	// Function to get max element
	void maxelement(int no_of_rows, int arr[][N]) {
		int i = 0;
		
		// Initialize max to 0 at beginning
		// of finding max element of each row
		int max = 0;
		int result[no_of_rows];
		while (i < no_of_rows) {
			for (int j = 0; j < N; j++) {
				if (arr[i][j] > max) {
					max = arr[i][j];
				}
			}
			result[i] = max;
			max = 0;
			i++;

		}
		printArray(result,no_of_rows);

	}

	// Driver code
	int main()
	{
		int arr[][N] = { {2, 40, 1, 80},
						{17, 4, 90, 11},
						{96, 34, 22, 10},
						{3, 2, 7, 5} };
	// Calling the function
		maxelement(4, arr);
	}

// This code is contributed by Rajput-Ji

Output:

1
4

22
2

The Maximum Element Of Each Row In A Matrix In Python

# Python program to find maximum
# element of each row in a matrix

# importing numpy
import numpy

# Function to get max element
def maxelement(arr):
	
	# get number of rows and columns
	no_of_rows = len(arr)
	no_of_column = len(arr[0])
	
	for i in range(no_of_rows):
		
		# Initialize max1 to 0 at beginning
		# of finding max element of each row
		max1 = 0
		for j in range(no_of_column):
			if arr[i][j] > max1 :
				max1 = arr[i][j]
				
		# print maximum element of each row
		print(max1)

# Driver Code
arr = [[2, 40, 1, 80],
       [17, 4, 90, 11],
       [96, 34, 22, 10],
       [3, 2, 7, 5] ]

# Calling the function	
maxelement(arr)

Output:

1
4

22
2

The Maximum Element Of Each Row In A Matrix In C#

// C# program to find maximum
// element of each row in a matrix
using System;

class GFG
{

// Function to get max element
public static void maxelement(int no_of_rows,
							int[][] arr)
{
	int i = 0;

	// Initialize max to 0 at beginning
	// of finding max element of each row
	int max = 0;
	int[] result = new int[no_of_rows];
	while (i < no_of_rows)
	{
		for (int j = 0;
				j < arr[i].Length; j++)
		{
			if (arr[i][j] > max)
			{
				max = arr[i][j];
			}
		}
		result[i] = max;
		max = 0;
		i++;

	}
	printArray(result);

}

// Print array element
private static void printArray(int[] result)
{
	for (int i = 0; i < result.Length;i++)
	{
		Console.WriteLine(result[i]);
	}

}

// Driver code
public static void Main(string[] args)
{
	int[][] arr = new int[][]
	{
		new int[] {2, 40, 1, 80},
		new int[] {17, 4, 90, 11},
		new int[] {96, 34, 22, 10},
		new int[] {3, 2, 7, 5}
	};
	
	// Calling the function
	maxelement(4, arr);
}
}

// This code is contributed by Shrikant13

Output:

1
4

22
2

The Maximum Element Of Each Row In A Matrix In PHP

<?php
// PHP program to find maximum
// element of each row in a matrix
$N = 4;


// Print array element
function printArray($result, $no_of_rows)
{
	for ($i = 0; $i < $no_of_rows; $i++)
	{
		echo $result[$i]."\n";
	}

}

// Function to get max element
function maxelement($no_of_rows, $arr)
{
	global $N;
	$i = 0;
	
	// Initialize max to 0 at beginning
	// of finding max element of each row
	$max = 0;
	$result=array_fill(0,$no_of_rows,0);
	while ($i < $no_of_rows)
	{
		for ($j = 0; $j < $N; $j++)
		{
			if ($arr[$i][$j] > $max)
			{
				$max = $arr[$i][$j];
			}
		}
		$result[$i] = $max;
		$max = 0;
		$i++;

	}
	printArray($result,$no_of_rows);

}

// Driver code
$arr = array(array(2, 40, 1, 80),
				array(17, 4, 90, 11),
				array(96, 34, 22, 10),
				array(3, 2, 7, 5));
// Calling the function
maxelement(4, $arr);

// This code is contributed by mits
?>

Output:

1
4

22
2

The Maximum Element Of Each Row In A Matrix In JavaScript

<script>
// javascript program to find maximum
// element of each row in a matrix
// Function to get max element
function maxelement(no_of_rows, arr)
{
	var i = 0;
	
	// Initialize max to 0 at beginning
	// of finding max element of each row
	var max = 0;
	var result = Array.from({length: no_of_rows}, (_, i) => 0);
	while (i < no_of_rows)
	{
		for (var j = 0; j < arr[i].length; j++)
		{
			if (arr[i][j] > max)
			{
				max = arr[i][j];
			}
		}
		result[i] = max;
		max = 0;
		i++;

	}
	printArray(result);

}

// Prvar array element
function printArray(result)
{
	for (var i = 0; i < result.length; i++)
	{
		document.write(result[i]+"<br>");
	}

}

// Driver code
	var arr = [[2, 40, 1, 80],
       [17, 4, 90, 11],
       [96, 34, 22, 10],
       [3, 2, 7, 5] ];
	
// Calling the function
maxelement(4, arr);

// This code is contributed by 29AjayKumar
</script>

Output:

1
4

22
2
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Lingaraj Senapati
Hey There! I am Lingaraj Senapati, the Co-founder of lingarajtechhub.com My skills are Freelance, Web Developer & Designer, Corporate Trainer, Digital Marketer & Youtuber.
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