Magic ?????? how does this happened ???

Question

namespace SoloLearn
{
class Program
{
static void DrawPyramid(int n)
{
for (int i=1; i<=n; i++)
{
for (int j=i; j<=n; j++)
{
Console.Write("AB");
}
for (int k=1; k<=2*i-1; k++)
{
Console.Write("*"+" ");
}
Console.WriteLine();
}
}
static void Main(string[] args)
{
DrawPyramid(2);
}
}
}

when you run the code "AB" string of the first loop is supposed to be written once but i nthe second loop it become two "AB" on the first line which was only one "AB" if we run DrawPyramid(1); !! how it becomes 2 please ???

Answer 1

If you post it so we can see it in the code playground would be better.

Looks like that code says the following:
DrawPyramid(2)
First iteration of first loop:
i=1 <= 2 TRUE
Go for the second loop, first iteration
j=i=1<= 2 TRUE
Write AB
go for the second iteration of second loop
j++ j now equals 2
2 <= 2 TRUE
Write AB again
j++ j now equals 3
j<=2 FALSE end of loop, next lines...
End next lines
Go to first loop and start the same process
i++, now i =2.

Etc

Hope it helps