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@@ -985,20 +985,7 @@ comments: true
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return right;
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}
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/* 快速排序类(中位基准数优化) */
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// 选取三个元素的中位数
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int medianThree(int nums[], int left, int mid, int right) {
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// 此处使用异或运算来简化代码
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// 异或规则为 0 ^ 0 = 1 ^ 1 = 0, 0 ^ 1 = 1 ^ 0 = 1
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if ((nums[left] < nums[mid]) ^ (nums[left] < nums[right]))
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return left;
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else if ((nums[mid] < nums[left]) ^ (nums[mid] < nums[right]))
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return mid;
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else
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return right;
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}
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// 哨兵划分(三数取中值)
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/* 哨兵划分(三数取中值) */
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int partitionMedian(int nums[], int left, int right) {
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// 选取三个候选元素的中位数
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int med = medianThree(nums, left, (left + right) / 2, right);
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