链接：http://acm.hdu.edu.cn/showproblem.php?pid=2057
Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 35905 Accepted Submission(s): 14614
Problem Description There must be many A + B problems in our HDOJ , now a new one is coming. Give you two hexadecimal integers , your task is to calculate the sum of them,and print it in hexadecimal too. Easy ? AC it !Input The input contains several test cases, please process to the end of the file. Each case consists of two hexadecimal integers A and B in a line seperated by a blank. The length of A and B is less than 15.
Output For each test case,print the sum of A and B in hexadecimal in one line.
Sample Input +A -A +1A 12 1A -9 -1A -12 1A -AA
Sample Output 0 2C 11 -2C -90
Author linle 注： 此题就是利用Long.parseLong()和Long.toHexString（）的 replaceAll("\\+","")，是去除其中的‘+’，因为进制计算不支持带“+”的某一进制的数字字符串，‘-’可以，同时还需要判断正数负数，从而利用Long.toHexString（）。 Java代码： import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner inScanner = new Scanner(System.in); while(inScanner.hasNext()) { long l = Long.parseLong(inScanner.next().replaceAll("\\+", ""),16) + Long.parseLong(inScanner.next().replaceAll("\\+", ""),16); if(l<0) { System.out.println("-" + Long.toHexString(-l).toUpperCase()); } else { System.out.println(Long.toHexString(l).toUpperCase()); } } } }
转载于:https://www.cnblogs.com/Weixu-Liu/p/9674229.html
相关资源：JAVA上百实例源码以及开源项目