easiest solution begineer friendly c++
Intuition\n Describe your first thoughts on how to solve this problem. \n\n# Approach\n Describe your approach to solving the problem. \n\n# Complexity\n- Time 
# Intuition\n<!-- Describe your first thoughts on how to solve this problem. -->\n\n# Approach\n<!-- Describe your approach to solving the problem. -->\n\n# Complexity\n- Time complexity:\n<!-- Add your time complexity here, e.g. $$O(n)$$ -->\n\n- Space complexity:\n<!-- Add your space complexity here, e.g. $$O(n)$$ -->\n\n# Code\n```\nclass Solution {\npublic:\n    int bitwiseComplement(int n) {\n       // int ans=0;\n       if(n==0) return 1;\n        for(int i=1;i<=n;i=i*2){\n            n=n^i;\n        }\n        return n;\n    }\n};\n```
['C++']