Java中输入3个整数并且实现按从小到大排序输出

首先是我想到最笨的方法：

import java.util.Scanner;
public class test1 {
    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);
        System.out.print("Enter a:");
        int a=input.nextInt();
        System.out.print("Enter b:");
        int b=input.nextInt();
        System.out.print("Enter c:"); //输入三个数
        int c=input.nextInt();
        int max =0;
        int mid=0;
        int min=0;
        if (a>b & a>c){max=a;}else if(b>a & b>c){  //暴力列举出最大数情况
            max=b;
        }else{
            max=c;
        }
        if(a<b & a<c ){min=a;}else if (b<a & b<c){  //列举出最小数所有情况
            min=b;
        }else{
            min=c;
        }
        if(a<b & a>c || a<c &a>c){mid=a;}else if(b<a & b>c || b>a & b<c){mid=b;}else{mid=c;} //列举出中间值情况
        System.out.println(min+" "+mid+" "+max);
    }
}

同样列举出所有情况：

import java.util.Scanner;
public class demo {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("a=");
        int a = sc.nextInt();
        System.out.print("b=");
        int b = sc.nextInt();
        System.out.print("c=");
        int c = sc.nextInt();
        if (a > b) {                      //a>b的情况 a较大
            if (c > a) {                  //c>a 已知a>b c最大
                System.out.println(b + "," + a + "," + c);
            } else if (c < b) {  //c<b 已知a>b 
                System.out.println(c + "," + b + "," + a);
            } else {
                System.out.println(b + "," + c + "," + a);
            }
            // a<b情况
        } else {
            if (c < a) {                  //a<b c<a
                System.out.println(c + "," + a + "," + b);
            } else if (c > b) {           //a<b c>b
                System.out.println(a + "," + b + "," + c);
            } else {
                System.out.println(a + "," + c + "," + b);
            }
        }
    }
}

再来个简单点的：

import java.util.Scanner;
public class demo {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.println("Enter");
        int a = s.nextInt();
        int b = s.nextInt();
        int c = s.nextInt();
        if (a < b) {
            int t = a;  /*如果a<b时候 a、b数值互换*/
            a = b;
            b = t;
        }
        if (a < c) {    /*如果a<c时候 a、c数值互换*/
            int t = a;
            a = c;
            c = t;
        }
        if (b < c) {    /*如果b<c时候 b、c数值互换*/
            int t = b;
            b = c;
            c = t;
        }
        System.out.println("");
        System.out.println(c + " " + b + " " + a);
    }
}