public class Program {
int m = 5;
int a = (int) 'a';
char[] c = new char[s.length()];
for(int i = 0; i < s.length(); i++){
int u = ((int) s.charAt(i)) - a;
int n = (u + m) % 26;
c[i] = (char)(n + a);
}
}
}
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