Consider the following recursive sum method:
public int sum(int x)
{
if (x == 0) return 0;
else return sum(x - 1) + 1;
}
If the base case is replaced with if (x == 1) return 1; the method will still compute the same thing.

Question

Quizplus · Accepted Answer

The method will compute a different result because the base case change means it will return 1 when x is 1, leading to an off-by-one error in the sum calculation.

Consider the Following Recursive Sum Method