2020年月20日Java学习日记

学习内容

整数排序

编写函数重载，分别将两个整数升序排列后输出、三个整数升序排列后输出、四个整数升序排列后输出

import java.util.Scanner;
public class Study {
    public static void sort(int a[], int n) {
        int temp;
        for (int i = 0; i < n - 1; i++) {
            for (int j = 0; j < n - i - 1; j++) {
                if (a[j] > a[j + 1]) {
                    temp = a[j];
                    a[j] = a[j + 1];
                    a[j + 1] = temp;
                }
            }
        }
        for (int i = 0; i < a.length; i++) {
            System.out.print(a[i] + " ");
        }
        System.out.println();
    }
    //两个整数排序
    public static void sort(int a, int b) {
        int arr[] = { a, b };
        sort(arr, 2);
    }
    //三个整数排序
    public static void sort(int a, int b, int c) {
        int arr[] = { a, b, c };
        sort(arr, 3);
    }
    //四个整数排序
    public static void sort(int a, int b, int c, int d) {
        int arr[] = { a, b, c, d };
        sort(arr, 4);
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int a1, a2;
        int b1, b2, b3;
        int c1, c2, c3, c4;
        System.out.print("请输入两个整数：");
        a1 = in.nextInt();
        a2 = in.nextInt();
        System.out.print("排序后：");
        sort(a1, a2);
        System.out.print("请输入三个整数：");
        b1 = in.nextInt();
        b2 = in.nextInt();
        b3 = in.nextInt();
        System.out.print("排序后：");
        sort(b1, b2, b3);
        System.out.print("请输入四个整数：");
        c1 = in.nextInt();
        c2 = in.nextInt();
        c3 = in.nextInt();
        c4 = in.nextInt();
        System.out.print("排序后：");
        sort(c1, c2, c3, c4);
    }
}