w3resource
Inviting useful, relevant, well-written and unique guest posts.

JavaScript: Returns n rows by n columns identity matrix

JavaScript Function: Exercise-10 with Solution

Write a JavaScript function which returns the n rows by n columns identity matrix.

Pictorial Presentation:

JavaScript: Returns n rows by n columns identity matrix

Sample Solution: -

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>n rows by n columns identity matrix</title>
</head>
<body>
  
</body>
</html>

JavaScript Code:

function matrix(n) {

        var i;
        var j;

        for (i=0; i < n; i++)
        {
          for (j=0; j < n; j++)
          {
               if (i === j)
               {
                
                 console.log(' 1 ');
               }
                      
               else 
                {
                 console.log(' 0 ');}
                }
             console.log('----------');
           }
       }
matrix(4);

Sample Output:

 1 
 0 
 0 
 0 
----------
 0 
 1 
 0 
 0 
----------
 0 
 0 
 1 
 0 
----------
 0 
 0 
 0 
 1 
----------

Flowchart:

Flowchart: JavaScript function: Returns n rows by n columns identity matrix

Live Demo:

See the Pen JavaScript -Returns n rows by n columns identity matrix-function-ex- 10 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function which accepts an argument and returns the type.
Next: Write a JavaScript function which will take an array of numbers stored and find the second lowest and second greatest numbers, respectively.

What is the difficulty level of this exercise?



Inviting useful, relevant, well-written and unique guest posts