Environment and Samples

Sample Problem Statement

Given an integerN, print 'hello world'Ntimes.

Sample Input

Sample Output


 hello world 
 hello world 
 hello world 
 hello world 
 hello world

Solutions by language

#include <stdio.h>
int main() {
    int i, n;
    scanf("%d", &n);
    for (i=0; i<n; i++) {
        printf("hello world\n");
    }
    return 0;
}

C++

#include <iostream>
using namespace std;
int main() {
    int i, n;
    cin >> n;
    for (i=0; i<n; i++) {
        cout << "hello world\n";
    }
    return 0;
}

using System;
namespace Solution {
    class Solution {
        static void Main(string[] args) {
            var line1 = System.Console.ReadLine().Trim();
            var N = Int32.Parse(line1);
            for (var i = 0; i < N; i++) {
                System.Console.WriteLine("hello world");
            }
        }
    }
}

Java

import java.io.*;
public class Solution {
    public static void main(String args[] ) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = br.readLine();
        int N = Integer.parseInt(line);
        for (int i = 0; i < N; i++) {
            System.out.println("hello world");
        }
    }
}

Objective C

#import<Foundation/Foundation.h>

int main(int argc, const char* argv[])
{
    @autoreleasepool {
        NSInteger n;
        scanf("%lu", &n);

        for (NSInteger i = 0; i < n; i++) {
            /*
             * Do not use NSLog to print to stdout
             */
            printf("hello world\n");
        }

        return 0;
    }
}

Javascript

function processData(input) {
    var i;
    for (i = 0; i < parseInt(input); i++) {
        console.log("hello world");
    }
}

process.stdin.resume();
process.stdin.setEncoding("ascii");
_input = "";
process.stdin.on("data", function (input) {
    _input += input;
});

process.stdin.on("end", function () {
   processData(_input);
});

Python

N = int(raw_input())
for i in xrange(N):
    print "hello world"

Ruby

N = gets
1.step(N.to_i, 1) { |i| print "hello world\n" }

PHP

<?php
fscanf(STDIN, "%d\n", $number);

for ( $i = 0; $i < $number; $i++) {
    echo "hello world\n";
}

Lua

N = io.read ()
for i = 1, tonumber(N), 1 do
    print("hello world")
end

Common Lisp (SBCL)

(let ((n (parse-integer (read-line))))
    (dotimes (i n)
        (format t "hello world~%")))

ERLANG

-module(solution).
-export([main/0]).

main() ->
    {ok, [Num]} = io:fread("", "~d"),
    print_hello(Num).

print_hello(0) ->
    0;
print_hello(N) ->
    io:format("Hello World~n"),
    print_hello(N - 1).

>/* Contributed by https://www.hackerrank.com/rciovati */

package main

import (
    "fmt"
)

func main() {
    times := readInt()
    for i := 0; i < times; i++ {
        fmt.Println("hello world")
    }
}

func readInt() int {
    var n int
    _, err := fmt.Scanf("%d", &n)

    if err != nil {
        panic(err)
    }

    return n
}

Clojure

/* Contributed by https://www.hackerrank.com/dmarjenburgh */

(let [n (Integer/parseInt (read-line))]
  (dotimes [_ n]
      (println "hello world")))

f <- file("stdin")
on.exit(close(f))

T <- readLines(f)
T <- strsplit(T, " ")
Ti <- as.numeric(T[[1]])

for(i in 1:Ti){
    write("hello world", stdout())
}

Swift

import Foundation

let n = Int(readLine()!)!

for i in 1...n {
    print("hello world")
}