[백준] 19564 반복 - Greedy / Java

• 문제 링크

19564번: 반복

 

• 풀이 코드

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        String s = br.readLine();

        int prev = 0, cnt = 1;
        for (int i = 0; i < s.length(); i++) if (prev >= (prev = s.charAt(i))) cnt++;

        bw.write(String.valueOf(cnt));
        bw.flush();
    }

}