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Find Rightmost Unset Bit of a Number

Problem
Examples
Example 1
Example 2
Example 3
Solution
Method 1 — Extract mask using ~n & (n+1) (recommended)
Intuition
Approach
Code
Complexity
Method 2 — Right-to-left scan
Intuition
Approach
Code
Complexity
Method 3 — Logarithm on isolated mask (not recommended)
Intuition
Approach
Code
Complexity
Notes & References

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Find Rightmost Set Bit of a NumberEasy
Isolate the rightmost 1-bitEasy

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Find Rightmost Set Bit of a NumberEasy Isolate the rightmost 1-bitEasy

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