WOJ1141-Encoded Love-letter

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?

输入格式

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

输出格式

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.

样例输入

ANGELFxlr jxaj eac W xlam cqim hqwglW xahl kqsl kplgwat zlltwryTlj sl atfack jxwru W eqr'j farra zqmylj cqiW mlslsnlm aj jxl eacCqi aml atfack qr sc swreLhlrjxqiyx W vikj gar jxwru anqij cqiWz jxl eac wr jxl zijimlJxwk tqhl fwtt nlgqswry jmilW'hl rlhlm gxaryl sc swre jxaj W fwtt tqhl cqi zqmlhlmW eqr'j gaml xqf zqqt wj wkW fwtt tlj sc emlas gqsl jmilW fwtt jltt cqi kqsljxwry W farra tlj cqi urqf, W tlj cqi urqfW tqhl cqi, tqhwry cqi, ak jxl sqikl tqhlk jxl mwglLhlr lhlmc eac xak kjqms, W fwtt atfack nc cqim kwelW swkk cqi, swkkwry cqiW eqr'j gaml xqf xame wj wkW vikj farj cqi jq nl xappcLhlmcjxwry, W eq wj zqm cqi 

样例输出

When that day I hear your voiceI have some special feelingLet me always think I don't wanna forget youI remember at the dayYou are always on my mindEventhough I just can think about youIf the day in the futureThis love will becoming trueI've never change my mind that I will love you foreverI don't care how fool it isI will let my dream come trueI will tell you something I wanna let you know, I let you knowI love you, loving you, as the mouse loves the riceEven every day has storm, I will always by your sideI miss you, missing youI don't care how hard it isI just want you to be happyEverything, I do it for you 

按照置换的方法套回去就可以

#include<stdio.h>#include<string.h>char key[27];int decode[26];int letter[26];char c;int main(){scanf("%s",&key);int i,l=strlen(key),t;memset(letter,0,sizeof(letter));for(i=0;i<l;i++){t=key[i]-'A';letter[t]=1;decode[i]=t;}t=26;for(;i<26;i++){while(t--){if(letter[t]==0)break;}decode[i]=t;}for(i=0;i<26;i++){letter[decode[i]]=i;}/*for(i=0;i<26;i++){printf("%c",'A'+decode[i]);}*/getchar();while(scanf("%c",&c)!=EOF){if(c>='a'&&c<='z')printf("%c",'a'+letter[c-'a']);else if(c>='A'&&c<='Z')printf("%c",'A'+letter[c-'A']);elseprintf("%c",c);} return 0;}