8916. First even

Given a positive integer n. Print the first n even positive integers in ascending order.

Input. One single positive integer n.

Output. Print the first n even positive integers in a single line.

Sample input	Sample output
3	2 4 6

SOLUTION

loop

Algorithm analysis

Print the first n even positive integers in ascending order.

Algorithm implementation

Read the input value of n.

scanf("%d", &n);

Print the first n even positive integers.

for (i = 1; i <= n; i++)

printf("%d ", 2 * i);

Java implementation

import java.util.*;

class Main

{

public static void main(String[] args)

{

Scanner con = new Scanner(System.in);

int n = con.nextInt();

for (int i = 1; i <= n; i++)

System.out.print(2*i + " ");

System.out.println();

con.close();

}

}

Python implementation

Read the input value of n.

n = int(input())

Print the first n even positive integers.

for i in range(1,n+1):

print(2*i, end = " ")

print()