字符串解析

问题描述: 

代码实现:

 1 package xiaoMiBishi_2015;
 2 
 3 import java.util.*;
 4 
 5 public class xiaoMi_2015 {
 6     
 7     public static void main(String[] args){
 8         int[] A,B,Key; String t_source;
 9         int max1,max2;             //记录x幂的最大值
10         max1=0; max2=0;
11         Scanner b=new Scanner(System.in);
12         t_source=b.nextLine();
13         b.close();
14         A=new int[100];
15         B=new int[100];
16         Key=new int[100];
17         for( int i=0;i<100;i++)
18             {A[i]=0;B[i]=0;Key[i]=0;}
19         String[] T=t_source.split(" ");
20         String[] t=T[0].split(",");
21         String[] u=T[1].split(",");
22         
23         for(int i=0;i<u.length;i=i+2){                          //取得每个i次幂的值放入A[i]
24             u[i]=u[i].substring(1, u[i].length());        
25             u[i+1]=u[i+1].substring(0, u[i+1].length()-1);        
26             int n=Integer.parseInt(u[i]);
27             B[n]=Integer.parseInt(u[i+1]);
28             if(n>=max2)
29             max2=n;
30         }
31         
32         for(int i=0;i<t.length;i=i+2){                          //取得每个i次幂的值放入B[i]
33             t[i]=t[i].substring(1, t[i].length());        
34             t[i+1]=t[i+1].substring(0, t[i+1].length()-1);        
35             int n=Integer.parseInt(t[i]);
36             A[n]=Integer.parseInt(t[i+1]);
37             if(n>=max1)
38                 max1=n;
39         }
40         
41         //System.out.print(max1);
42         //System.out.print(max2);
43         
44        for(int p=0;p<=max1+max2;p++){                        //两者想乘整合
45                   
46              for(int q=0;q<=p;q++){
47                  
48                        Key[p]=Key[p]+A[q]*B[p-q];
49                          
50                      }
51         
52              System.out.println(Key[p]);
53          }
54        
55        System.out.println("结果是:");                        //输出结果
56         int n=0;                                           
57         for(int i=max1+max2;i>=0;i--){
58             
59             if(Key[i]!=0){
60                 if(n!=0 && Key[i]>0)
61                 System.out.print("+");
62                 System.out.print(Key[i]);
63                 System.out.print("x^");
64                 System.out.print(i);
65                 n++;
66             }
67             
68         }
69     }
70 
71 }

运行效果:

原文地址:https://www.cnblogs.com/udld/p/4096695.html