HackerRank Tweets Solution

Hello Programmers, In this post, you will learn how to solve HackerRank Tweets Solution. This problem is a part of the Regex HackerRank Series.

One more thing to add, don’t straight away look for the solutions, first try to solve the problems by yourself. If you find any difficulty after trying several times, then look for the solutions. We are going to solve the  Regex HackerRank Solutions using  CPP, JAVA, PYTHON, JavaScript & PHP Programming Languages.

You can practice and submit all HackerRank problem solutions in one place. Find a solution for other domains and Sub-domain. I.e. Hacker Rank solution for HackerRank C ProgrammingHackerRank C++ ProgrammingHackerRank Java Programming, HackerRank Python ProgrammingHackerRank Linux ShellHackerRank SQL Programming, and HackerRank 10 days of Javascript.

HackerRank Tweets Solution
HackerRank Tweets Solution

As you already know that this site does not contain only the Hacker Rank solutions here, you can also find the solution for other problems. I.e. Web Technology, Data StructuresRDBMS ProgramsJava Programs Solutions,  Fiverr Skills Test answersGoogle Course AnswersLinkedin Assessment, and Coursera Quiz Answers.

HackerRank Tweets Solution


Increasing popularity of hackerrank can be seen in tweets like

  • I love #hackerrank
  • I just scored 27 points in the Picking Cards challenge on #HackerRank
  • I just signed up for summer cup @hackerrank

Given a set of most popular tweets, your task is to find out how many of those tweets has the string hackerrank in it.

Input Format

First line is an integer N. N lines follow. Each line is a valid tweet.


  • 1 <= N <= 10
  • Each character of the tweet is a valid ASCII character.

Output Format

Print the total number of tweets that has hackerrank (case insensitive) in it

Sample Input

I love #hackerrank
I just scored 27 points in the Picking Cards challenge on #HackerRank
I just signed up for summer cup @hackerrank
interesting talk by hari, co-founder of hackerrank

Sample Output



HackerRank Tweets Solution in Cpp

using namespace std;
int main()
    long long num,count,C,L,a[100000],i,j,k,l,m,n,kase;
    string s,s1;
    string str="hackerrank";
        int len=s.size();
        for(i=0; i<len; i++)
                int len1=i+10;
                for(j=i; j<len1; j++)
                    char ch=tolower(tolower(s[j]));
        return 0;

HackerRank Tweets Solution in Java

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

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */
		Scanner in = new Scanner(System.in);
        int count = 0;
		int testcase = in.nextInt();
		String b = in.nextLine();
        String format = "(?i).*(#|@|)hackerrank.*";
		String[] fill = new String[testcase];
		for (int i = 0;i<fill.length; i++){
			fill[i] = in.nextLine();
			if(fill[i].matches(format) == true){

HackerRank Tweets Solution in Python

import re
from sets import Set
import string
import sys
n = int(input())
res = 0
for i in range(n):
    s = raw_input()

HackerRank Detect HTML Attributes Solution in JavaScript

'use strict';

function processData(input) {
    var parse_fun = function (s) { return parseInt(s, 10); };

    var hackerRE = new RegExp('[#@]?hackerrank', 'ig');
    var lines = input.split('\n');
    var N = parse_fun(lines.shift());
    var data = lines.splice(0, N);

    var res = 0;
    data.forEach(function (s) {
        var arr = s.match(hackerRE);
        if (arr != null) { res += arr.length; }

var _input = "";
process.stdin.on("data", function (input) { _input += input; });
process.stdin.on("end", function () { processData(_input); });

HackerRank Detect HTML Attributes Solution in PHP

$a = fopen('php://stdin','r');
	 $b = fgets($a);
	 $b = trim($b);
	 if(preg_match('/\[email protected]\b/i',$b) || (preg_match('/\b#hackerrank\b/i', $b)) || (preg_match("/hackerrank/i",$b))){
echo $count;

Disclaimer: This problem  (HackerRank Tweets) is generated by HackerRank but the solution is provided by Chase2learn. This tutorial is only for Educational and Learning purposes.


1. How do you solve the first question in HackerRank?

If you want to solve the first question of Hackerrank then you have to decide which programing language you want to practice i.e C programming, Cpp Programing, or Java programming then you have to start with the first program HELLO WORLD.

2. How do I find my HackerRank ID?

You will receive an email from HackerRank to confirm your access to the ID. Once you have confirmed your email, the entry will show up as verified on the settings page. You will also have an option to “Make primary”. Click on that option. Read more

3. Does HackerRank detect cheating?

yes, HackerRank uses a powerful tool to detect plagiarism in the candidates’ submitted code. The Test report of a candidate highlights any plagiarized portions in the submitted code and helps evaluators to verify the integrity of answers provided in the Test.

4. Does HackerRank use camera?

No for coding practice Hackerrank does not use camera but for companies’ interviews code submission time Hackerrank uses the camera.

5. Should I put HackerRank certificate on resume?

These certificates are useless, and you should not put them on your resume. The experience you gained from getting them is not useless. Use it to build a portfolio, and link to it on your resume. 

6. Can I retake HackerRank test?

The company which sent you the HackerRank Test invite owns your Test submissions and results. It’s their discretion to permit a reattempt for a particular Test. If you wish to retake the test, we recommend that you contact the concerned recruiter who invited you to the Test and request a re-invite. 

7. What is HackerRank?

HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. Wikipedia

Finally, we are now, in the end, I just want to conclude some important message for you

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