Combination code in backtracking may be misleading

[cuiHL]

    for (int i = index; i < arr.length; i++) {
        currSet.add(arr[i]);
        backtracking(arr, i + 1, currSet, result);
        currSet.remove(arr[i]);
    }

It should be backtracking(arr, index + 1, currSet, result);

[siriak]

Which file is that code from?

[cuiHL]

Which file is that code from?

Combination.java

[siriak]

It seems correct, we're adding an element to the set and backtracking subsets with it, and then removing the element from the set and backtracking subsets without the element.

[emmygithub]

Yeah, it seems correct also.

[siriak]

The code is probably correct