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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Repeated String
  5. Discussions

Repeated String

  • jhpar25
     + 13 comments

    Java Solution 

    static long count(String s, long n) {
    long numOfS = n/s.length();
    long rest = n % s.length();

    if(!s.contains("a")) return 0;
    return s.length()>n? aCounter(s, rest) 
            : numOfS*aCounter(s, s.length()) + aCounter(s, rest);
}

    private static long aCounter(String s, long end) {
        int a=0;
        for (int i = 0; i < end; i++) {
            if (s.charAt(i) == 'a') a++;
        }
        return a;
}