q287573145的博客

1：给你一串数字，比如1234567890，变成1,234,567,890（字符串形式） import java.util.Stack; ​ public class Answer { ​ public static void main(String[] args) { String a = "112348554"; Stack stck = new Stack(); for (int i = a.length()-1; i>=0; ...

public class _05_QuickSort { public static void main(String[] args) { int[] arr = new int[] {22,23,6,30,7,10,11,24}; quickSort(arr,0,arr.length-1); // sort(arr,0,arr.length-1); System.out.println(Arrays.toString(arr)); ...

public class _04_ShellSort { public static void main(String[] args) { int[] arr = new int[] {5,3,11,22,-3,-1,0,-22,2,9,7,4}; for (int i = 0; i < 1000; i++) { arr = new int[1000]; int value = new Random().next...

public class _03_InsertSort { public static void main(String[] args) { int[] arr = {5,3,2,9,7,6,4}; sort(arr); } private static void sort(int[] arr) { for (int i = 1; i < arr.length; i++) { int ...

public class _02_SelectSort { public static void main(String[] args) { int[] arr = {5,3,2,9,7,6,1}; sort2(arr); } //方法1 private static void sort1(int[] arr) { for (int i = 0; i < arr.length-1; i++) { ...

public class _01_MPSort { public static void main(String[] args) { int[] arr = {5,3,2,9,7,6,4}; sort(arr); System.out.println(Arrays.toString(arr)); } public static void sort(int[] arr) { for (int i = ...