[백준/JAVA] 단계별로 풀어보기(2단계) 코드 모음

문제 1330) 두 수 비교하기

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

public class Main {
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuffer id = new StringBuffer(br.readLine());
        id.append("??!");
        System.out.print(id);
    }
}

문제 9498) 시험 성적

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

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

문제 2753) 윤년

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

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

문제 14681) 사분면 고르기

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

public class Main {
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int x = Integer.parseInt(br.readLine());
        int y = Integer.parseInt(br.readLine());

        if(x>0) {
            if(y>0) {
                System.out.println("1");
            }
            else {
                System.out.println("4");
            }
        }
        else {
            if(y>0) {
                System.out.println("2");
            }
            else {
                System.out.println("3");
            }
        }
    }
}

문제 2884) 알람 시계

import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public 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());
        M-=45;
        if(M<0) {
            M+=60;
            H-=1;
        }
        if(H<0) {
            H=23;
        }
        System.out.println(H + " " + M);
    }
}

문제 2525) 오븐 시계

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.util.StringTokenizer;

public 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 hour = Integer.parseInt(st.nextToken());
        int min = Integer.parseInt(st.nextToken());
        int cook = Integer.parseInt(br.readLine());
        int cook_h = cook/60;
        int cook_m = cook%60;
        hour = hour + cook_h;
        min = min+cook_m;
        if(min >= 60) {
            min = min-60;
            hour++;
        }
        if(hour>=24) {
            hour%=24;
        }
        System.out.println(hour + " " + min);
    }
}

문제 2480) 주사위 세개

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.util.StringTokenizer;

public 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 prize=0;

        int dice[] = new int[7];
        for(int i=0;i<3;i++) {
            dice[Integer.parseInt(st.nextToken())]++;
        }
        for(int i=1;i<7;i++) {
            if(dice[i]==3) {
                prize = 10000 + i*1000;
                break;
            }
            if(dice[i]==2) {
                prize = 1000 + i*100;
                break;
            }
            if(dice[i]==1) {
                prize = 100 * i;
            }
        }
        System.out.println(prize);
    }
}