Sum of Two Integers.cpp

// say Alhamdulillah

#include <bits/stdc++.h>
using namespace std;

class Solution {
public:
  int recur(int a, int b) {
    if (!a || !b)
      return a | b;
    return recur(a ^ b, (a & b) << 1);
  }

  int getSum(int a, int b) { return recur(a, b); }
};