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Given a positive integer num, output its complement number. The complement strategy is to flip the bits of its binary representation. |
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Example 1: |
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Input: num = 5 |
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Output: 2 |
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Explanation: The binary representation of 5 is 101 (no leading zero bits), and its complement is 010. So you need to output 2. |
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Example 2: |
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Input: num = 1 |
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Output: 0 |
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Explanation: The binary representation of 1 is 1 (no leading zero bits), and its complement is 0. So you need to output 0. |
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Constraints: |
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The given integer num is guaranteed to fit within the range of a 32-bit signed integer. |
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num >= 1 |
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You could assume no leading zero bit in the integer’s binary representation. |
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This question is the same as 1009: https://leetcode.com/problems/complement-of-base-10-integer/ |
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