How does this code result in a six

Question

https://code.sololearn.com/WGnnr2LNF3Dr/?ref=app

import java.util.Scanner;

public class Main{

public static void main(String args[]){
int x=1;
for(int i =1; i< 4; i++){
x *= i;
}
System.out.println(x);
}

}

Answer 1

First run of loop: x = 1, i = 1 x becomes x(1) * 1=1, i becomes i(1) + 1 = 2
Second run of loop: x = 1, i = 2 x becomes x(1) * 2 = 2, i becomes i(2) + 1 = 3
Third run of loop: x = 2, i = 3 x becomes x(2) * 3 = 6, i becomes i(3) + 1 = 4
Now as 4 is not less than 4, the loop stops and 6 gets printed. Use <= instead of < to include 4 in the product.

Answer 2

thank you so much, nice explanation!

Answer 3

you are welcome!