[JAVA] Code Up 기초 100제 (1083 ~ 1087)

# 1083

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        for (int i = 1; i <= n; i++) {
            if (i % 3 == 0 || i % 6 == 0) {
                System.out.print("X");
                System.out.print(" ");
            } else {
                System.out.print(i);
                System.out.print(" ");
            }
        }
    }
}

 

# 1084

import java.io.*;

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[] rgb = br.readLine().split(" ");

        int r = Integer.parseInt(rgb[0]);
        int g = Integer.parseInt(rgb[1]);
        int b = Integer.parseInt(rgb[2]);

        int cnt = r * g * b;

        for (int i = 0; i < r; i++) {
            for (int j = 0; j < g; j++) {
                for (int k = 0; k < b; k++) {
                    bw.write(i + " " + j + " " + k + "\n");
                }
            }
        }

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

        bw.flush();
        bw.close();
        br.close();
    }
}

 

# 1085

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long h = sc.nextLong();
        long b = sc.nextLong();
        long c = sc.nextLong();
        long s = sc.nextLong();

        double total = h * b * c * s;
        double result = ((total / 8) / Math.pow(2, 10) / Math.pow(2, 10));

        System.out.printf("%.1f MB", result);

    }
}

 

# 1086

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        long r = sc.nextLong();
        long g = sc.nextLong();
        long b = sc.nextLong();

        double result = (r * g * b / 8 /Math.pow(2, 10) / Math.pow(2, 10));

        System.out.printf("%.2f MB", result);

    }
}

 

# 1087

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        long a = sc.nextLong();
        long sum = 0;

        for (int i = 1; i < 10000000; i++) {

            sum += i;

            if (sum >= a) {
                System.out.println(sum);
                break;
            }
        }

    }

}

 

 

코드업 기초 100제

문제집 / C언어 기초 100제