题目1089：数字反转

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import java.io.IOException;import java.io.FileReader;import java.io.BufferedReader;import java.util.Scanner;class Main {public static final boolean DEBUG = false;public static void main(String[] args) throws IOException{Scanner cin;String s1, s2;int n;if (DEBUG) {cin = new Scanner(new BufferedReader(new FileReader("d:\\OJ\\uva_in.txt")));} else {cin = new Scanner(System.in);}n = cin.nextInt();while (n-- > 0) {s1 = cin.next();s2 = cin.next();int a1 = Integer.parseInt(s1), a2 = Integer.parseInt(s2);int ans1 = a1 + a2;StringBuffer tmp1 = new StringBuffer(s1);StringBuffer tmp2 = new StringBuffer(s2);s1 = tmp1.reverse().toString();s2 = tmp2.reverse().toString();a1 = Integer.parseInt(s1);a2 = Integer.parseInt(s2);int ans2 = a1 + a2;s1 = new Integer(ans1).toString();tmp1 = new StringBuffer(s1);s1 = tmp1.reverse().toString();ans1 = Integer.parseInt(s1);if (ans1 == ans2) {System.out.println(tmp1.reverse().toString());} else {System.out.println("NO");}}}}

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