[Lucky Algorithm] Mars Exploration(29/77)

Mars Exploration (Hacker Rank)

Letters in some of the SOS messages are altered by cosmic radiation during transmission. Given the signal received by Earth as a string, S, determine how many letters of Sami’s SOS have been changed by radiation.

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String S = in.next();
        String sos = "SOS";
        int result = 0;
        for(int i = 0; i < S.length(); i++){
            if(S.charAt(i) != sos.charAt(i%3)){
                result++;
            }
        }
        System.out.println(result);
    }
}

행운의 77문제 프로젝트

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