Java数组排序总结(冒泡,选择,插入,希尔)

package org.idcn.jse;

public class SortAll {

 /**
  * 冒泡排序,选择排序,插入排序,希尔(Shell)排序 Java的实现 
  *
  */
 public static void main(String[] args) {
  int[] i = { 1, 5, 6, 12, 4, 9, 3, 23, 39, 403, 596, 87 };
  System.out.println("----冒泡排序的结果:");
  maoPao(i);
  System.out.println();
  System.out.println("----选择排序的结果:");
  xuanZe(i);
  System.out.println();
  System.out.println("----插入排序的结果:");
  chaRu(i);
  System.out.println();
  System.out.println("----希尔(Shell)排序的结果:");
  shell(i);
 }

 // 冒泡排序
 public static void maoPao(int[] x) {
  for (int i = 0; i < x.length; i++) {
   for (int j = i + 1; j < x.length; j++) {
    if (x[i] > x[j]) {
     int temp = x[i];
     x[i] = x[j];
     x[j] = temp;
    }
   }
  }
  for (int i : x) {
   System.out.print(i + " ");
  }
 }

 // 选择排序
 public static void xuanZe(int[] x) {
  for (int i = 0; i < x.length; i++) {
   int lowerIndex = i;
   // 找出最小的一个索引
   for (int j = i + 1; j < x.length; j++) {
    if (x[j] < x[lowerIndex]) {
     lowerIndex = j;
    }
   }
   // 交换
   int temp = x[i];
   x[i] = x[lowerIndex];
   x[lowerIndex] = temp;
  }
  for (int i : x) {
   System.out.print(i + " ");
  }
 }

 // 插入排序
 public static void chaRu(int[] x) {
  for (int i = 1; i < x.length; i++) {// i从一开始,因为第一个数已经是排好序的啦
   for (int j = i; j > 0; j--) {
    if (x[j] < x[j - 1]) {
     int temp = x[j];
     x[j] = x[j - 1];
     x[j - 1] = temp;
    }
   }
  }
  for (int i : x) {
   System.out.print(i + " ");
  }
 }

 // 希尔排序
 public static void shell(int[] x) {
  // 分组
  for (int increment = x.length / 2; increment > 0; increment /= 2) {
   // 每个组内排序
   for (int i = increment; i < x.length; i++) {
    int temp = x[i];
    int j = 0;
    for (j = i; j >= increment; j -= increment) {
     if (temp < x[j - increment]) {
      x[j] = x[j - increment];
     } else {
      break;
     }
    }
    x[j] = temp;
   }
  }

  for (int i : x) {
   System.out.print(i + " ");
  }
 }
}

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