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Update medianThree() in quick_sort.

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Yudong Jin
2023-01-15 23:32:58 +08:00
parent 3e19205c84
commit 5f0ae848c4
8 changed files with 25 additions and 16 deletions
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2
codes/cpp/chapter_sorting/quick_sort.cpp
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@ -59,7 +59,7 @@ private:
static int medianThree(vector<int>& nums, int left, int mid, int right) {
// 使用了异或操作来简化代码
// 异或规则为 0 ^ 0 = 1 ^ 1 = 0, 0 ^ 1 = 1 ^ 0 = 1
if ((nums[left] > nums[mid]) ^ (nums[left] > nums[right]))
if ((nums[left] < nums[mid]) ^ (nums[left] < nums[right]))
return left;
else if ((nums[mid] < nums[left]) ^ (nums[mid] < nums[right]))
return mid;