(数组的应用二：高精度运算4.2.1)POJ 1504 Adding Reversed Numbers(将一个数取反)

 
package com.njupt.acm;  
  
import java.math.BigInteger;  
import java.util.Scanner;  
  
public class POJ_1504 {  
  
    public static void main(String[] args) {  
        Scanner scanner = new Scanner(System.in);  
          
        int t = scanner.nextInt();  
        while(t>0){  
            String str1 = scanner.next();  
            String str2 = scanner.next();  
              
            //StringBuilder的reverse()方法能将一个字符串取反  
            StringBuilder sb1 = new StringBuilder(str1);  
            StringBuilder sb2 = new StringBuilder(str2);  
              
          
            //Integer.parseInt(str)..能去掉前置的无效0  
            int add1 = Integer.parseInt(sb1.reverse().toString());   
            int add2 = Integer.parseInt(sb2.reverse().toString());   
              
            int result = add1 + add2;  
              
            String str3 = String.valueOf(result);  
            StringBuilder sb3 = new StringBuilder(str3);  
            System.out.println(Integer.parseInt(sb3.reverse().toString()));  
              
            t--;  
        }  
          
    }  
}  

补充：软件开发 , Java ,

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