476. Number Complement LeetCode Solution | Easy Approach

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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.

  • For example, The integer 5 is "101" in binary and its complement is "010" which is the integer 2.

Given an integer num, return its complement.

Example 1:

Input: num = 5
Output: 2
Explanation: The binary representation of 5 is 101 (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

Number Complement Solutions

Time: O(n)
Space: O(n)

C++

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Java

 
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Python

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