[백준] 10807번 개수세기, 10871번 X보다 작은 수, 10818번 최소, 최대, 10699번 오늘 날짜

10699번 오늘 날짜

 

import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
	public static void main(String[] args) {
		Date now = new Date();
		String s = now.toString();
		SimpleDateFormat formatType= new SimpleDateFormat("yyyy-MM-dd");
		System.out.println(formatType.format(now));
	}
}

 

10818번 최소, 최대

 

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		int[] array = new int[n];
		
		for(int i=0; i<n; i++) {
			array[i] = scanner.nextInt();
		}
		
		int min = array[0];
		int max = array[0];
		
		for(int i=1; i<array.length; i++) {
			if(min> array[i]) {
				min = array[i];
			}
			if(max < array[i]) {
				max = array[i];
			}
		}
		System.out.print(min +" "+ max);
	}
	
}

 

10871번 X보다 작은 수

 

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		int[] array = new int[n];
		int x = scanner.nextInt();

		
		for(int i=0; i<n; i++) {
			array[i] = scanner.nextInt();
		}
				
		for(int i=0; i<array.length; i++) {
			if( x > array[i]) {
				System.out.print(array[i]+ " ");
			}
		}	
		scanner.close();
	}
}

 

10807번 개수세기 

 

public class Main {
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		int number = 0;
		int[] numbers = new int[n];
		
	
		for(int i=0; i<n; i++) {
			numbers[i] = scanner.nextInt();
		}
		
		int v = scanner.nextInt();
		scanner.close();
		
		for(int i=0; i<numbers.length; i++) {
			if(v == numbers[i]) {
				number++;
			}
		}
		System.out.println(number);
		
		
	}

}