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P1914 小书童——凯撒密码

caiji12345 @ 2023-02-03 18:18:59

#include<bits/stdc++.h>
using namespace std;

int main ()
{
    int n;
    cin>>n;
    char ch;
    cin.get();
    while((ch=getchar())!='\n'){
        if(ch+n > 'z'){
            ch = 'a'+(n-1-('z'-ch))%26;
        }
        else
            ch += n;
        cout<<ch;
    }
   return 0;    
}

by MC00101 @ 2023-07-10 14:18:32

#include <bits/stdc++.h>
using namespace std;
int main(){
    string a;
    int n;
    cin>>n;
    cin>>a;
    for(int i=0;i<=a.size()-1;i++){
            a[i]=(a[i]-'a'+n)%26+'a';
    }
    cout<<a;
    return 0;
}

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