DSA/C++/LeetCode/0260.cpp at main · spycedcoffee/DSA · GitHub

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class Solution {
public:
    vector<int> singleNumber(vector<int>& nums) {

        int xr = 0;

        for(auto& n : nums)
            xr ^= n;

        int val = 1;

        while(1){
            if((val & xr) == 0)
                val = val << 1;
            else
                break;
        }

        int a = 0;
        int b = 0;

        for(auto& n : nums){
            if((n & val) == 0)
                a ^= n;

            else
                b ^= n;
        }

        vector<int> result;
        result.push_back(b);
        result.push_back(a);

        return result;
    }
};