快速排序是一种高效的排序算法,使用分治法策略。它的基本思想是:选择一个元素作为“基准”(pivot),重新排序数列,所有比基准值小的元素摆放在基准前面,所有比基准值大的摆在基准的后面。在这个分区退出之后,该基准就处于数列的中间位置。这个过程称为分区(partition)操作。然后,递归地(recursive)把小于基准值元素的子数列和大于基准值元素的子数列排序。

Java版快速排序

public class QuickSort {public static void quickSort(int[] arr, int low, int high) {if (low < high) {int pivotIndex = partition(arr, low, high);quickSort(arr, low, pivotIndex - 1);// 对基准左边的数组进行递归排序quickSort(arr, pivotIndex + 1, high); // 对基准右边的数组进行递归排序}}private static int partition(int[] arr, int low, int high) {int pivot = arr[high];int i = (low - 1); // 小于基准的元素的索引for (int j = low; j < high; j++) {if (arr[j] < pivot) {i++;swap(arr, i, j);}}swap(arr, i + 1, high);return i + 1;}private static void swap(int[] arr, int i, int j) {int temp = arr[i];arr[i] = arr[j];arr[j] = temp;}public static void main(String args[]) {int[] arr = {10, 7, 8, 9, 1, 5};int n = arr.length;quickSort(arr, 0, n - 1);System.out.println("Sorted array: ");for (int i : arr) {System.out.print(i + " ");}}}

Kotlin版快速排序

fun quickSort(arr: IntArray, low: Int, high: Int) {if (low < high) {val pi = partition(arr, low, high)quickSort(arr, low, pi - 1)quickSort(arr, pi + 1, high)}}fun partition(arr: IntArray, low: Int, high: Int): Int {val pivot = arr[high]var i = low - 1for (j in low until high) {if (arr[j] < pivot) {i++arr[i] = arr[j].also { arr[j] = arr[i] }}}arr[i + 1] = arr[high].also { arr[high] = arr[i + 1] }return i + 1}fun main() {val arr = intArrayOf(10, 7, 8, 9, 1, 5)val n = arr.sizequickSort(arr, 0, n - 1)println("Sorted array: ${arr.joinToString(" ")}")}

C版快速排序

#include void quickSort(int arr[], int low, int high) {if (low < high) {int pi = partition(arr, low, high);quickSort(arr, low, pi - 1);quickSort(arr, pi + 1, high);}}int partition(int arr[], int low, int high) {int pivot = arr[high];int i = low - 1;for (int j = low; j < high; j++) {if (arr[j] < pivot) {i++;int temp = arr[i];arr[i] = arr[j];arr[j] = temp;}}int temp = arr[i + 1];arr[i + 1] = arr[high];arr[high] = temp;return i + 1;}int main() {int arr[] = {10, 7, 8, 9, 1, 5};int n = sizeof(arr) / sizeof(arr[0]);quickSort(arr, 0, n - 1);printf("Sorted array: ");for (int i = 0; i < n; i++) {printf("%d ", arr[i]);}printf("\n");return 0;}

C++版快速排序

#include void quickSort(int arr[], int low, int high) {if (low < high) {int pi = partition(arr, low, high);quickSort(arr, low, pi - 1);quickSort(arr, pi + 1, high);}}int partition(int arr[], int low, int high) {int pivot = arr[high];int i = low - 1;for (int j = low; j < high; j++) {if (arr[j] < pivot) {i++;std::swap(arr[i], arr[j]);}}std::swap(arr[i + 1], arr[high]);return i + 1;}int main() {int arr[] = {10, 7, 8, 9, 1, 5};int n = sizeof(arr) / sizeof(arr[0]);quickSort(arr, 0, n - 1);std::cout << "Sorted array: ";for (int i = 0; i < n; i++) {std::cout << arr[i] << " ";}std::cout << std::endl;return 0;}

Dart版快速排序

void quickSort(List<int> arr, int low, int high) {if (low < high) {int pivotIndex = partition(arr, low, high);quickSort(arr, low, pivotIndex - 1);quickSort(arr, pivotIndex + 1, high);}}int partition(List<int> arr, int low, int high) {int pivot = arr[high];int i = low - 1;for (int j = low; j < high; j++) {if (arr[j] < pivot) {i++;swap(arr, i, j);}}swap(arr, i + 1, high);return i + 1;}void swap(List<int> arr, int i, int j) {int temp = arr[i];arr[i] = arr[j];arr[j] = temp;}void main() {List<int> arr = [10, 7, 8, 9, 1, 5];quickSort(arr, 0, arr.length - 1);print("Sorted array: $arr");}

JavaScript版快速排序

function quickSort(arr, low, high) {if (low < high) {let pi = partition(arr, low, high);quickSort(arr, low, pi - 1);quickSort(arr, pi + 1, high);}}function partition(arr, low, high) {let pivot = arr[high];let i = low - 1;for (let j = low; j < high; j++) {if (arr[j] < pivot) {i++;swap(arr, i, j);}}swap(arr, i + 1, high);return i + 1;}function swap(arr, i, j) {let temp = arr[i];arr[i] = arr[j];arr[j] = temp;}// 使用示例let arr = [10, 7, 8, 9, 1, 5];quickSort(arr, 0, arr.length - 1);console.log("Sorted array:", arr);

汇编语言(Assembly Language asm)快速排序

以下是一个基本的 ARM 汇编语言快速排序算法示例,适用于运行 ARM 架构处理器的 Linux 系统。请注意,这个例子是针对 ARMv7 架构编写的,可能需要根据你的具体 ARM 架构版本做出调整。

.global quicksort.dataarray: .word 10, -1, 8, 3, 2, -5, 4length: .word 7.textquicksort:push {r4-r11, lr}mov r1, #0ldr r2, =lengthldr r2, [r2]subs r2, r2, #1bl partitionpop {r4-r11, pc}partition:push {r4-r11, lr}mov r11, r1mov r10, r0ldr r4, [r0, r2, lsl #2]partition_loop:ldr r3, [r10, r11, lsl #2]cmp r3, r4addge r11, r11, #1blt swapcmp r11, r2blt partition_loopbl swappop {r4-r11, pc}swap:push {r4-r11, lr}ldr r3, [r10, r1, lsl #2]ldr r12, [r10, r11, lsl #2]str r12, [r10, r1, lsl #2]str r3, [r10, r11, lsl #2]pop {r4-r11, pc}

在这个示例中,quicksort 函数是快速排序算法的入口点,partition 是用于分区的函数,而 swap 函数用于交换数组中的两个元素。这些函数使用 ARM 寄存器和指令来处理数组中的元素,并执行排序算法的步骤。

要运行这个程序,你需要在支持 ARM 架构的 Linux 系统上使用适当的汇编器和链接器。在不同的 ARM 架构版本(如 ARMv6、ARMv8)上,可能需要进行语法或指令集的调整。

请注意,这只是一个基本的示例,可能需要进一步的优化和调整以适应特定的需求和环境。