常见排序算法java程序

import java.util.Arrays;

public class Ch1_2 {

public static void main(String[] args) {

    // 打印一维数组:Arrays.toString(array),打印多维数组:Arrays.deepToString(array)
    System.out.println("simpleSelect sort:"+ Arrays.toString(simpleSelectSort(new int[]{2,5,2,5,3,67,14,25,13,7,10}))+"\n");
    System.out.println("insert sort:"+ Arrays.toString(insertSort(new int[]{2,5,2,5,3,67,14,25,13,7,10}))+"\n");
    System.out.println("bubble sort:"+ Arrays.toString(bubbleSort(new int[]{2,5,2,5,3,67,14,25,13,7,10})));
}

// 简单选择排序方法,每次选择最小值排在待排数组的首位,直到待排数组为空
public static int[] simpleSelectSort(int[] array) {
    int m = array.length;
    for (int i=0;i<m-1;i++) {
        int min = i;
        for (int j=i+1;j<m;j++) {
            if (array[j]<array[min]) {
                min = j;
            }
        }
        int q = array[min];
        array[min] = array[i];
        array[i] = q;
        System.out.println("第"+(i+1)+"趟:"+Arrays.toString(array));
    }
    return array;
}

// 插入排序方法,每次选择一个临近末尾值排入已排序的数组中
public static int[] insertSort(int[] array) {
    int i, j, t = 0;
    for (i = 1; i < array.length; i++) {
        t = array[i];
        for (j = i - 1; j >= 0 && t < array[j]; j--)
            array[j + 1] = array[j];
        array[j + 1] = t;
        System.out.println("第"+(i)+"趟:"+Arrays.toString(array));
    }
    return array;
}

// 冒泡排序方法,两两比较,将最大值交换至末尾,直到待排数组为0
public static int[] bubbleSort(int[] array) {
    int m = array.length;
    for (int i=0;i<m-1;i++) {
        for (int j=0;j<m-i-1;j++) {
            if (array[j]>array[j+1]) {
                int q = array[j];
                array[j] = array[j+1];
                array[j+1] = q;
            }
        }
        System.out.println("第"+(i)+"趟:"+Arrays.toString(array));
    }
    return array;
}

}

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转载自blog.csdn.net/anneCoder/article/details/79772334