Crypto Columns

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                                                                             1036. Crypto Columns

Description
The columnar encryption scheme scrambles the letters in a message (or plaintext) using a keyword as illustrated in the following example: Suppose BATBOY is the keyword and our message is MEET ME BY THE OLD OAK TREE. Since the keyword has 6 letters, we write the message (ignoring spacing and punctuation) in a grid with 6 columns, padding with random extra letters as needed:

MEETME
BYTHEO
LDOAKT
REENTH

Here, we've padded the message with NTH. Now the message is printed out by columns, but the columns are printed in the order determined by the letters in the keyword. Since A is the letter of the keyword that comes first in the alphabet, column 2 is printed first. The next letter, B, occurs twice. In the case of a tie like this we print the columns leftmost first, so we print column 1, then column 4. This continues, printing the remaining columns in order 5, 3 and finally 6. So, the order the columns of the grid are printed would be 2, 1, 4, 5, 3, 6, in this case. This output is called the ciphertext, which in this example would be EYDEMBLRTHANMEKTETOEEOTH. Your job will be to recover the plaintext when given the keyword and the ciphertext.

Input

There will be multiple input sets. Each set will be 2 input lines. The first input line will hold the keyword, which will be no longer than 10 characters and will consist of all uppercase letters. The second line will be the ciphertext, which will be no longer than 100 characters and will consist of all uppercase letters. The keyword THEEND indicates end of input, in which case there will be no ciphertext to follow.

Output
For each input set, output one line that contains the plaintext (with any characters that were added for padding). This line should contain no spacing and should be all uppercase letters.
Sample Input
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BATBOYEYDEMBLRTHANMEKTETOEEOTHHUMDINGEIAAHEBXOIFWEHRXONNAALRSUMNREDEXCTLFTVEXPEDARTAXNAARYIEXTHEEND
Sample Output
MEETMEBYTHEOLDOAKTREENTHONCEUPONATIMEINALANDFARFARAWAYTHERELIVEDTHREEBEARSXXXXXX

题目描述:二维数组转换,根据给出关键词的字母顺序,逆转组合出原来的字符串。

分析:

根据字符串A,可以知道加密时先取哪一列,再取哪一列,于是可以把字符串按顺序填回到矩阵中,最后按从上到下的顺序得到字符串B。

关键词字符串找最小字母:每次比较ASCII值,找到最小后,将其填充为一个比Z还大的字符,以后再对这个字符串找最小的时候,不会再找回这个位置。



#include<iostream>#include<string>char note[11][11];using namespace std;int min(string k){    int be=-1;    int min='Z'+1;    int note;    for(int i=0;i<k.size();i++)    {     if(k[i]<min)      {      min=k[i];      be=i;      }    }    return be;}int main(){   string key;   string s;   while(cin>>key)   {   if(key=="THEEND") return 0;   cin>>s;   int len1=key.size();   int len2=s.size();   int line;   line=len2/len1;      int less;   int a=0;   for(int x=0;x<len1;x++)   {    less=min(key);    key[less]='a';    for(int i=0;i<line;i++)    {     note[i][less]=s[a];     a++;    }  }  for(int i=0;i<line;i++)  {   for(int j=0;j<len1;j++)   {   cout<<note[i][j];   }  }  cout<<endl;}//system("pause");return 0;}        




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