Learn Perl from Scratch/

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Challenge 2: Print a Matrix

Challenge 2: Print a Matrix

Practice how to print a matrix, i.e., a two-dimensional array.

We'll cover the following...

Problem statement

Print a two-dimensional array of size n x n as shown below in the form of a matrix.

Subroutine prototype

sub printMat($n)

Input

An integer.

Output

Print matrix on the console.

Sample input

$n = 4;

Sample output

Print an array of size 4 x 4 as:

  • The diagonal of the array should be filled with 0.
  • The lower side should be filled will -1s.
  • upper side should be filled with 1s.

Make sure to put spaces between the values and print each row in the next line

Note: In order to move a value to the next line you can use "\n" and " " for space.

0-1-1-110-1-1110-11110
Sample Output Array

Coding challenge

Try to implement the solution by yourself once you have understood the problem statement clearly. Referring to the solution part should be your last resort.
Good luck!

Perl
sub printMat {
  #write the code for making and printing the matrix here
  #use can use \n to move numers to next line in the matrix
  #use " " to add space between numbers in matrix
  print "Write your code below"; #comment out this line when you start writing cod
}