From b1d6018af5faccacee67a5fcbfa9e74e5d423d23 Mon Sep 17 00:00:00 2001 From: Du Yuanchao Date: Tue, 2 Nov 2021 19:05:59 +0800 Subject: [PATCH] update quicksort --- .../java/com/examplehub/sorts/QuickSort.java | 28 +++++++------------ 1 file changed, 10 insertions(+), 18 deletions(-) diff --git a/src/main/java/com/examplehub/sorts/QuickSort.java b/src/main/java/com/examplehub/sorts/QuickSort.java index 6ac018aa..92eafddd 100644 --- a/src/main/java/com/examplehub/sorts/QuickSort.java +++ b/src/main/java/com/examplehub/sorts/QuickSort.java @@ -1,7 +1,5 @@ package com.examplehub.sorts; -import com.examplehub.utils.SortUtils; - public class QuickSort implements Sort { @Override @@ -11,18 +9,15 @@ public void sort(int[] numbers) { private int partition(int[] number, int left, int right) { int pivot = number[left]; - while (left < right) { - while (left < right && number[right] >= pivot) { + while (left != right) { + while (left != right && number[right] >= pivot) { right--; } - while (left < right && number[left] <= pivot) { - left++; - } - if (left < right) { - SortUtils.swap(number, left, right); + number[left] = number[right]; + while (left != right && number[left] <= pivot) { left++; - right--; } + number[right] = number[left]; } number[left] = pivot; return left; @@ -54,18 +49,15 @@ public > void sort(T[] array) { private static > int partition(T[] array, int left, int right) { T pivot = array[left]; - while (left < right) { - while (left < right && array[right].compareTo(pivot) >= 0) { + while (left != right) { + while (left != right && array[right].compareTo(pivot) >= 0) { right--; } - while (left < right && array[left].compareTo(pivot) <= 0) { + array[left] = array[right]; + while (left != right && array[left].compareTo(pivot) <= 0) { left++; } - if (left < right) { - SortUtils.swap(array, left, right); - left++; - right--; - } + array[right] = array[left]; } array[left] = pivot; return left; pFad - Phonifier reborn

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