输入三个字符串，按由小到大的顺序输出 字符串排序-一种简单的方法 

 1 /**
 2  * 对两位数的ascii是可以的
 3  * 对三位数的就不行了
 4  */
 5 import java.util.Scanner;
 6 public class 字符串排序 {
 7     
 8     public static int getMax(int x, int y) {
 9         return x>y?x:y;
10     }
11     public static int getMin(int x, int y) {
12         return x<y?x:y;
13     }
14     public static int GetMiddle(int x,int y,int z) {
15         int temp=0;
16         if(x>y)
17         {
18             temp=x;
19             x=y;
20             y=temp;
21         }
22         if(z<x) return x;
23         else if(z<y) return z;
24         else return y;        
25     }
26     
27     public static void main(String[] args) {
28         Scanner scanner=new Scanner(System.in);
29         String str1=scanner.next();
30         String str2=scanner.next();
31         String str3=scanner.next();
32         int[] str1_num =new int[3];
33         int[] str2_num =new int[3];
34         int[] str3_num =new int[3];
35         for(int i=0;i<3;i++) {
36             str1_num[i]=Integer.valueOf(str1.charAt(i));
37             str2_num[i]=Integer.valueOf(str2.charAt(i));
38             str3_num[i]=Integer.valueOf(str3.charAt(i));
39         }
40         int n1=str1_num[0]*10000+str1_num[1]*100+str1_num[2];
41         int n2=str2_num[0]*10000+str2_num[1]*100+str2_num[2];
42         int n3=str3_num[0]*10000+str3_num[1]*100+str3_num[2];
43         int max=getMax(n1, getMax(n2, n3));
44         int middle=GetMiddle(n1, n2, n3);
45         int min=getMin(n1, getMin(n2, n3));
46         
47         System.out.print((char)(min/10000));
48         System.out.print((char)(min%10000/100));
49         System.out.print((char)(min%10000%100));
50         System.out.print(min);
51         System.out.print((min/10000));
52         System.out.print((min%10000/100));
53         System.out.print((min%10000%100));
54         System.out.println();
55         System.out.print((char)(middle/10000));
56         System.out.print((char)(middle%10000/100));
57         System.out.print((char)(middle%10000%100));
58         System.out.println();
59         System.out.print((char)(max/10000));
60         System.out.print((char)(max%10000/100));
61         System.out.print((char)(max%10000%100));
62 
63         
64     }
65 
66 }

控制变量，逐步交换相邻的两个，直到确定最终顺序

 1 import java.util.Scanner;
 2 public class 字符串排序第二种方法 {
 3 
 4     public static void main(String[] args) {
 5 
 6         Scanner scanner =new Scanner(System.in);
 7         String str1=scanner.next();
 8         String str2=scanner.next();
 9         String str3=scanner.next();
10         if(str1.compareTo(str2)>0) {
11             String temp=str1;
12             str1=str2;
13             str2=temp;
14         }
15         if(str1.compareTo(str3)>0) {
16             String temp=str1;
17             str1=str3;
18             str3=temp;
19         }
20         if(str2.compareTo(str3)>0) {
21             String temp=str3;
22             str3=str2;
23             str2=temp;
24         }
25         System.out.println(str1);
26         System.out.println(str2);
27         System.out.println(str3);
28         //System.out.println(str1+str2+str3);
29         scanner.close();
30     }
31 
32 }

 

posted @ 2018-09-28 20:53  kongchung  阅读(1813)  评论(0)  编辑  收藏  举报