HR30 Day 7: Arrays

1 개요

Day 7: Arrays

• https://www.hackerrank.com/challenges/30-arrays/problem

해커랭크 30 Days of Code

문제	풀이
0-9 Day e
HR30 Day 0: Hello, World.
HR30 Day 1: Data Types
HR30 Day 2: Operators
HR30 Day 3: Intro to Conditional Statements
HR30 Day 4: Class vs. Instance
HR30 Day 5: Loops
HR30 Day 6: Let's Review
HR30 Day 7: Arrays
HR30 Day 8: Dictionaries and Maps
HR30 Day 9: Recursion

2 Java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

public class Solution {
    private static final Scanner scanner = new Scanner(System.in);
    public static void main(String[] args) {
        int n = scanner.nextInt();
        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
        int[] arr = new int[n];
        String[] arrItems = scanner.nextLine().split(" ");
        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
        for (int i=0; i<n; i++) {
            int arrItem = Integer.parseInt(arrItems[i]);
            arr[i] = arrItem;
        }
        scanner.close();
        for (int i=0; i<n; i++) {
            System.out.print( arr[n-i-1] + " " );
        }
    }
}

3 PHP

<?php
$stdin = fopen("php://stdin", "r");
fscanf($stdin, "%d\n", $n);
fscanf($stdin, "%[^\n]", $arr_temp);
fclose($stdin);
$arr = array_map('intval', preg_split('/ /', $arr_temp, -1, PREG_SPLIT_NO_EMPTY));
echo implode(' ',array_reverse($arr));

4 Python

#!/bin/python3
import math
import os
import random
import re
import sys

if __name__ == '__main__':
    n = int(input())
    arr = list(map(int, input().rstrip().split()))
    arr.reverse()
    print( " ".join(str(i) for i in arr) )