java 三个数排序 java实现三个数排序

1、 
 
 import java.util.Scanner; 
 
 public class Covert1 { 
 
   
   
   
  public static void main(String[] args){ 
 
   
   
   
    
   
   
  int a,b,c,t; 
 
   
   
   
    
   
   
  Scanner sc=new Scanner(System.in);  
   
   
   
   
   
   
   
   
   
  //输入 
 
   
   
   
    
   
   
  System.out.println("please input the first integer"); 
 
   
   
   
    
   
   
  a=sc.nextInt();  
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  //获取输入的数 
 
   
   
   
    
   
   
  System.out.println("please input the second integer"); 
 
   
   
   
    
   
   
  b=sc.nextInt(); 
 
   
   
   
    
   
   
  System.out.println("please input the third integer"); 
 
   
   
   
    
   
   
  c=sc.nextInt();

  -----------------------------------------------------------------
第一种方法：       
       

if(a<b) 
 
   
   
   
    
   
   
  { 
 
   
   
   
    
   
   
   
   
   
  if(b<c)System.out.println(a+" "+b+" "+c); 
 
   
   
   
    
   
   
   
   
   
  else{ 
 
   
   
   
    
   
   
    
   
   
    
   
  if(a<c)System.out.println(a+" "+c+" "+b); 
 
   
   
   
    
   
   
    
   
   
    
   
  else System.out.println(c+" "+a+" "+b); 
 
   
   
   
    
   
   
   
   
   
  } 
 
   
   
   
    
   
   
  } 
 
   
   
   
    
   
   
  else 
 
   
   
   
    
   
   
  { 
 
   
   
   
    
   
   
    
   
   
  if(a<c)System.out.println(b+" "+a+" "+c); 
 
   
   
   
    
   
   
    
   
   
   
   
   
  else 
 
   
   
   
    
   
   
    
   
   
   
   
   
  { 
 
   
   
   
    
   
   
    
   
   
    
   
   
    
   
  if(b<c)System.out.println(b+" "+c+" "+a); 
 
   
   
   
    
   
   
    
   
   
    
   
   
    
   
  else System.out.println(c+" "+b+" "+a); 
 
   
   
   
    
   
   
  } 
 
   
   
   
  }

---------------------------------------------------------------------------
第二种方法：
         

if(a>b){ 
 
   
   
   
    
   
   
    
   
   
  t=a;a=b;b=t; 
 
   
   
   
    
   
   
  } 
 
   
   
   
    
   
   
  if(b>c){ 
 
   
   
   
    
   
   
    
   
   
  t=b;b=c;c=t; 
 
   
   
   
    
   
   
  } 
 
   
   
   
    
   
   
  if(a>c){ 
 
   
   
   
    
   
   
    
   
   
  t=a;a=c;c=t; 
 
   
   
   
    
   
   
  } 
 
   
   
   
    
   
   
  System.out.println(a+" "+b+" "+c); 
 
 --------------------------------------------------------------------------- 
 
   
 } 
 
 }