[JAVA] 백준 2단계

1330 두 수 비교하기

나의 답) 100ms

import java.io.*;
import java.util.StringTokenizer;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        
        int a = Integer.parseInt(st.nextToken());
        int b = Integer.parseInt(st.nextToken());
        
        String ans = a > b ? ">" : (b > a ? "<" : "==");
        System.out.print(ans);
    }
}

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9498 시험 성적

나의 답1) 104ms

import java.io.*;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int score = Integer.parseInt(br.readLine());
        
        char grade = score >= 90 ? 'A' : (score >= 80 ? 'B' : (score >= 70 ? 'C' : (score >= 60 ? 'D' : 'F')));
        System.out.print(grade);
    }
}

 

나의 답2) 100ms

import java.io.*;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int score = Integer.parseInt(br.readLine());
        char grade;
        
        if (score >= 90) grade = 'A';
        else if (score >= 80) grade = 'B';
        else if (score >= 70) grade = 'C';
        else if (score >= 60) grade = 'D';
        else grade = 'F';
        System.out.print(grade);
    }
}

---

2753 윤년

나의 답) 100ms

import java.io.*;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int year = Integer.parseInt(br.readLine());
        
        int res = ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0) ? 1 : 0);
        System.out.print(res);
    }
}

 

 

다른 사람의 답) 104ms

import java.io.*;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int a = Integer.parseInt(br.readLine());
        
        if ((a % 4 == 0 && a % 100 != 0) || a % 400 == 0) {
            System.out.print("1");
        } else {
            System.out.print("0");
        }
    }
}

---

14681 사분면 고르기

나의 정답) 96ms

import java.io.*;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int res;
        
        int x = Integer.parseInt(br.readLine());
        int y = Integer.parseInt(br.readLine());
        
        if (x > 0 && y > 0) res = 1;
        else if (x < 0 && y > 0) res = 2;
        else if (x < 0 && y < 0) res = 3;
        else res = 4;
        
        System.out.print(res);
    }
}

---

2884 알람 시계

나의 정답) 108ms

import java.io.*;
import java.util.StringTokenizer;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        
        int H = Integer.parseInt(st.nextToken());
        int M = Integer.parseInt(st.nextToken());
        
        if (M >= 45) {
            M -= 45;
        } else {
            M += 15;
            if (H >= 1) H -= 1;
            else H += 23;
        }
        System.out.printf("%d %d", H, M);
    }
}

 

---

2525 오븐 시계

나의 정답) 104ms

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

        int A = Integer.parseInt(st.nextToken());
        int B = Integer.parseInt(st.nextToken());
        int C = Integer.parseInt(br.readLine());

        B += C;
        A += B / 60;
        B = B % 60;
        A %= 24;

        System.out.printf("%d %d", A, B);
    }
}

---

2480 주사위 세개

나의 답) 96ms

import java.io.*;
import java.util.StringTokenizer;
class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        int res;
        
        int x = Integer.parseInt(st.nextToken());
        int y = Integer.parseInt(st.nextToken());
        int z = Integer.parseInt(st.nextToken());
        
        if (x == y && y == z) res = 10000 + x * 1000;
        else if (x == y || y == z || z == x) {
            if (x == y) res = 1000 + x * 100;
            else res = 1000 + z * 100;
        } else {
            if (x > y && x > z) res = x * 100;
            else if (y > x && y > z) res = y * 100;
            else res = z * 100;
        }
        System.out.print(res);
    }
}