Differences in increment operators used in a while loop

[will85]

I was wondering if someone could explain what is actually happening with i between these while loops:

i = 1;
		while (i++ < max) {
			arr[i] = arr[i-1] + i*i;
			System.out.println(arr[i] + "   " + i);
		}

i = 1;
		while (++i < max) {
			arr[i] = arr[i-1] + i*i;
			System.out.println(arr[i] + "   " + i);
		}

i = 1;
		while (i < max) {
			arr[i] = arr[i-1] + i*i;
			System.out.println(arr[i] + "   " + i);
			i++;
		}

Thanks for the help!

[ahmee]

in first code the i is increment e.g int i=1 so in while statement the value of i that is one is increment to 2 and then checked with max(max can be any value which you specfic to compare with.

sEcond code is the same as the first one as in first you write i++ in whileloop and in second you write as ++i it doesnt matter both are same

In third i is compare with max(which can be any value you specfy)