I'm not sure I learned anything about sqr(). I don't know anything about it or how it works or where I put it.
package com.codegym.task.task01.task0127;
/*
Square of a number
*/
public class Solution {
public static void main(String[] args) {
//write your code here
int a = 5;
}
public static int sqr(int a) {
return a * a;
}
}