Java中输入3个整数并且实现按从小到大排序输出

「爱情、让人受尽委屈。」 2022-05-24 09:44 194阅读 0赞

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);
        }
    }