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13 lines
264 B
Swift
13 lines
264 B
Swift
class Solution {
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func findComplement(_ num: Int) -> Int {
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if num == 0 {
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return 0;
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}
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if num & 1 != 0 {
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return findComplement(num >> 1) << 1;
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}
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return (findComplement(num >> 1) << 1) + 1;
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}
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}
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