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Number Complement
The complement of an integer is the integer you get when you flip all the 0's to 1's and all the 1's to 0's in its binary representation.
The complement of an integer is the integer you get when you flip all the 0's to 1's and all the 1's to 0's in its binary representation.
Given an integer num, return its complement.
Example 1
Input: num = 5
Output: 2
Explanation: The binary representation of 5 is 10^1 (no leading zero bits), and its complement is 010. So you need to output 2.
Example 2
Input: num = 1
Output: 0
Explanation: The binary representation of 1 is 1 (no leading zero bits), and its complement is 0. So you need to output 0.
Constraints
- 1 <= num < 231
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