Javascript Program to Find maximum element of each row in a matrix

Given a matrix, the task is to find the maximum element of each row.
Examples:

Input :  [1, 2, 3]
         [1, 4, 9]
         [76, 34, 21]

Output :
3
9
76

Input : [1, 2, 3, 21]
        [12, 1, 65, 9]
        [1, 56, 34, 2]
Output :
21
65
56

Approach : Approach is very simple. The idea is to run the loop for no_of_rows. Check each element inside the row and find for the maximum element. Finally, print the element. 
Below is the implementation : 

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);

}

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

}

// Driver code
    var arr = [[3, 4, 1, 8],
    [ 1, 4, 9, 11],
    [ 76, 34, 21, 1],
   [ 2, 1, 4, 5] ];

// Calling the function
maxelement(4, arr);

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

Output :

8
11
76
5

Time Complexity: O(N*M), where N is the number of rows and M is the number of columns in the given matrix.

Space Complexity: O(N), where N is the number of rows in the given matrix.

Please refer complete article on Find maximum element of each row in a matrix for more details!