Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -.
Example 1:
Input: a = 1, b = 2 Output: 3
Example 2:
Input: a = -2, b = 3 Output: 1
Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -.
Example 1:
Input: a = 1, b = 2 Output: 3
Example 2:
Input: a = -2, b = 3 Output: 1