[CodeUp] 1047-1048 (Java)

# 1047 : 정수 1개 입력 받아 2배 곱해 출력

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        System.out.println(num<<1);
        sc.close();
    }
}

 

# 1048 : 한 번에 2의 거듭제곱 배로 출력

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        System.out.println(a<<b);
        sc.close();
    }
}

 

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