NYOJ题目457大小写互换

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AC代码：

 1 import java.util.Scanner;
 2
 3 public class Main {
 4
 5     public static void main(String[] args) {
 6
 7
 8
 9         Scanner sc=new Scanner(System.in);
10
11         int n=Integer.parseInt(sc.nextLine());
12
13         while(n-->0){
14
15             char cs[]=sc.nextLine().toCharArray();
16
17             for(int i=0;i<cs.length;i++){
18                 if(cs[i]>=‘a‘ && cs[i]<=‘z‘) cs[i]-=32;
19                 else cs[i]+=32;
20             }
21
22             System.out.println(new String(cs));
23
24         }
25
26     }
27
28 }

题目来源： http://acm.nyist.net/JudgeOnline/problem.php?pid=457