20220923-冒泡排序及自定义冒泡排序

package com.zhz.arrays;

import java.util.Arrays;
import java.util.Comparator;

/**
 * @author zhz
 * @version 1.0
 */
public class ArraysSortCustom {
    public static void main(String[] args) {
        int arr[] = {1, -1, 8, 0, 20};
        //bubble01(arr);
        bubble02(arr, new Comparator() {

            @Override
            public int compare(Object o1, Object o2) {
                Integer i1 = (Integer) o1;
                Integer i2 = (Integer) o2;
                return i2 - i1;
            }
        });
        System.out.println(Arrays.toString(arr));
    }
    // 冒泡排序
    public static void bubble01(int[] arr) {
        int temp = 0;
        for (int i = 0; i < arr.length - 1; i++) {
            for (int j = 0; j < arr.length - 1 - i; j++) {
                if (arr[j] < arr[j + 1]) {
                    temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
                System.out.print("i=" + i + " j=" + j + "\t");
            }
            System.out.println();
        }
    }

    //结合冒泡 + 定制
    public static void bubble02(int[] arr, Comparator c) {
        int temp = 0;
        for (int i = 0; i < arr.length - 1; i++) {
            for (int j = 0; j < arr.length - 1 - i; j++) {
                // 数组排序由c.compare(x,y)的返回值决定
                if (c.compare(arr[j], arr[j + 1]) > 0) {
                    temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
                System.out.print("i=" + i + " j=" + j + "\t");
            }
            System.out.println();
        }
    }
}