[백준] 15312 이름 궁합 - Dynamic Programming / Java

• 문제 링크

15312번: 이름 궁합

 

• 풀이 과정

 

• 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));

        final int[] count = {3, 2, 1, 2, 3, 3, 2, 3, 3, 2, 2, 1, 2, 2, 1, 2, 2, 2, 1, 2, 1, 1, 1, 2, 2, 1};

        String a = br.readLine();
        String b = br.readLine();

        int len = a.length() * 2;
        int[] dp = new int[len];

        for (int i = 0, j = 0; i < len; i++)
            dp[i] = i % 2 == 0 ? count[a.charAt(j) - 'A'] : count[b.charAt(j++) - 'A'];

        while (len-- > 2) {
            for (int i = 0; i < len; i++)
                dp[i] = (dp[i] + dp[i + 1]) % 10;
        }

        bw.write(new StringBuilder().append(dp[0]).append(dp[1]).toString());
        bw.flush();
    }

}