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Fix the median_three mehod for quick sort (#1134)

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* Add the section of terminologies.

* fix format

* Fix median_three function for quick sort

* Delete docs/chapter_appendix/terminologies.md

* Update quick_sort.ts

* Update quick_sort.rs

* Update quick_sort.js
This commit is contained in:
Yudong Jin
2024-03-15 01:06:59 +08:00
committed by GitHub
parent 644eaf99ff
commit 9769e14017
12 changed files with 83 additions and 93 deletions
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14
codes/javascript/chapter_sorting/quick_sort.js
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@ -55,12 +55,14 @@ class QuickSortMedian {
/* 选取三个候选元素的中位数 */
medianThree(nums, left, mid, right) {
// 此处使用异或运算来简化代码
// 异或规则为 0 ^ 0 = 1 ^ 1 = 0, 0 ^ 1 = 1 ^ 0 = 1
if ((nums[left] < nums[mid]) ^ (nums[left] < nums[right])) return left;
else if ((nums[mid] < nums[left]) ^ (nums[mid] < nums[right]))
return mid;
else return right;
let l = nums[left],
m = nums[mid],
r = nums[right];
// m 在 l 和 r 之间
if ((l <= m && m <= r) || (r <= m && m <= l)) return mid;
// l 在 m 和 r 之间
if ((m <= l && l <= r) || (r <= l && l <= m)) return left;
return right;
}
/* 哨兵划分（三数取中值） */