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[백준] 25206번 - 너의 평점은 [Java][C++]

[백준] 25206번 - 너의 평점은 [Java][C++]

문제 링크


1. 문제 풀이

총 평점을 구하는 문제로 각 표에 맞춰 문자열을 실수 타입으로 변환하면 간단하게 해결할 수 있다.


2. 코드

1. 구현 [Java]

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import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st;

        double totalSum = 0;
        double creditSum = 0;
        for (int i = 0; i < 20; i++) {
            st = new StringTokenizer(br.readLine());
            st.nextToken();
            double credit = Double.parseDouble(st.nextToken());
            String grade = st.nextToken();

            if (grade.equals("P")) continue;

            if (grade.equals("A+")) {
                totalSum += credit * 4.5;
            } else if (grade.equals("A0")) {
                totalSum += credit * 4.0;
            } else if (grade.equals("B+")) {
                totalSum += credit * 3.5;
            } else if (grade.equals("B0")) {
                totalSum += credit * 3.0;
            } else if (grade.equals("C+")) {
                totalSum += credit * 2.5;
            } else if (grade.equals("C0")) {
                totalSum += credit * 2.0;
            } else if (grade.equals("D+")) {
                totalSum += credit * 1.5;
            } else if (grade.equals("D0")) {
                totalSum += credit;
            }
            creditSum += credit;
        }

        System.out.println(totalSum / creditSum);
    }
}

2. 구현 [C++]

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#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    double totalSum = 0;
    double creditSum = 0;
    for (int i = 0; i < 20; i++) {
        string s, grade;
        double credit;
        cin >> s >> credit >> grade;

        if (grade == "P") continue;

        if (grade == "A+") {
            totalSum += credit * 4.5;
        } else if (grade == "A0") {
            totalSum += credit * 4.0;
        } else if (grade == "B+") {
            totalSum += credit * 3.5;
        } else if (grade == "B0") {
            totalSum += credit * 3.0;
        } else if (grade == "C+") {
            totalSum += credit * 2.5;
        } else if (grade == "C0") {
            totalSum += credit * 2.0;
        } else if (grade == "D+") {
            totalSum += credit * 1.5;
        } else if (grade == "D0") {
            totalSum += credit;
        }
        creditSum += credit;
    }

    cout << totalSum / creditSum;
}

3. 풀이 정보

1. 구현 [Java]

언어시간메모리코드 길이
Java 11112 ms14400 KB1366 B

2. 구현 [C++]

언어시간메모리코드 길이
C++ 170 ms2024 KB986 B

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