HDU 1591：Encoded Love-letter

Encoded Love-letter Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 1883    Accepted Submission(s): 697

Problem Description

After Gardon had got Angel's letter, he found it was encoded...Oh my god, why did she encode a love-letter?? But don't worry, she wrote the algorithm for encoding after the letter:
Each charactor are changed to a corresponding charactor. If the keyword is "Angel", the rule will be:

ABCDEFGHIJKLMNOPQRSTUVWXYZ
ANGELZYXWVUTSRQPOMKJIHFDCB

You may find that in the bottom line, charactors of the keyword come first. All other charactors will come in a reversed order.

Now given another keyword, work the letter out!
Can you write a program to translate the letter?

 

Input

The letter will begin with the keyword (All uppercase), then lines of text.

 

Output

Decode the letter and print it out. Please note that a upper-case charactor will be decoded to a upper-case charactor, while a lower-case charactor will be decoded to a lower-case charactor.

 

Sample Input

ANGEL Fxlr jxaj eac W xlam cqim hqwgl W xahl kqsl kplgwat zlltwry Tlj sl atfack jxwru W eqr'j farra zqmylj cqi W mlslsnlm aj jxl eac Cqi aml atfack qr sc swre Lhlrjxqiyx W vikj gar jxwru anqij cqi Wz jxl eac wr jxl zijiml Jxwk tqhl fwtt nlgqswry jmil W'hl rlhlm gxaryl sc swre jxaj W fwtt tqhl cqi zqmlhlm W eqr'j gaml xqf zqqt wj wk W fwtt tlj sc emlas gqsl jmil W fwtt jltt cqi kqsljxwry W farra tlj cqi urqf, W tlj cqi urqf W tqhl cqi, tqhwry cqi, ak jxl sqikl tqhlk jxl mwgl Lhlr lhlmc eac xak kjqms, W fwtt atfack nc cqim kwel W swkk cqi, swkkwry cqi W eqr'j gaml xqf xame wj wk W vikj farj cqi jq nl xappc Lhlmcjxwry, W eq wj zqm cqi

 

Sample Output

When that day I hear your voice I have some special feeling Let me always think I don't wanna forget you I remember at the day You are always on my mind Eventhough I just can think about you If the day in the future This love will becoming true I've never change my mind that I will love you forever I don't care how fool it is I will let my dream come true I will tell you something I wanna let you know, I let you know I love you, loving you, as the mouse loves the rice Even every day has storm, I will always by your side I miss you, missing you I don't care how hard it is I just want you to be happy Everything, I do it for you

 

Author

题意：题的意思是随便输入一个字符串，然后密码字符串前几个跟输入字符串相同，后边是倒着来

源代码：

#include<bits/stdc++.h>
using namespace std;
char sh[1100],s[1100];
char c;
int i,j,k,l,m,n;
int main()
{
    scanf("%s",sh);
    getchar();
    l=strlen(sh);
    for(i=0;i<l;i++)
        if(sh[i]>='a'&&sh[i]<='z')
            sh[i]-=32;
    for(i=0;i<l;i++)
        s[i]=sh[i];
    int flag=25;
    for(i=25;i>=0;i--)
    {
        for(j=0;j<l;j++)
            if('Z'-i==sh[j])
                break;
        if(j==l)
            s[flag--]='Z'-i;
    }
    while(scanf("%c",&c)!=EOF)
    {
        for(i=0;i<26;i++)
        {
            if(c==s[i])
            {
                printf("%c",'A'+i);
                break;
            }

            if(c==s[i]+32)
            {
                printf("%c",'a'+i);
                break;
            }
        }
        if(i==26)
            printf("%c",c);
    }
}