问题：

开始尝试用字符做数组元素，但是并没有用。在判断语句时把a z排出了。

An easy problem

Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)

Problem Description

we define f(A) = 1, f(a) = -1, f(B) = 2, f(b) = -2, ... f(Z) = 26, f(z) = -26;

Give you a letter x and a number y , you should output the result of y+f(x).

Input

On the first line, contains a number T.then T lines follow, each line is a case.each case contains a letter and a number.

Output

for each case, you should the result of y+f(x) on a line.

Sample Input

6
R 1
P 2
G 3
r 1
p 2
g 3

Sample Output

19
18
10
-17
-14

代码：

import java.util.*;

public class Main{
	public static void M1(char str,int kk){
		char aa[]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
		for(int i=0;i<26;i++){
			if(aa[i]==str)
				System.out.println((i+1)+kk);
		}
	}
	public static void M2(char str,int kk){
		char aa[]={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
		for(int i=0;i<26;i++){
			if(aa[i]==str)
				System.out.println(-(i+1)+kk);
		}
	}
	public static void main(String[] args) {
		Scanner cin=new Scanner(System.in);
		int nn=cin.nextInt();
		for(int ii=0;ii<nn;ii++){
			String st=cin.next();
			int kk=cin.nextInt();
			char a[]=st.toCharArray();
			char str=a[0];
			if(str>='a'&&str<='z')
				M2(str,kk);
			else if(str>='A'&&str<='Z')
				M1(str,kk);

		}
	}
}