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Clumsy administrator sql hackerrank solution These are not the only solutions. Advanced Join. Hard SQL (Intermediate) Max Score: 50 Success Rate: 85. HackerRank SQL Problems and Solutions —2. 1 watching. You've arranged the problems in increasing difficulty order, and the i th problem has estimated difficulty level i. File metadata and controls. 48%. - adminazhar/-hackerrank-SQL-intermediate-skills-certification-test-solution The following challenges require the use INNER JOINs and LEFT JOINs. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. Find I am very OCD when it comes to how I write SQL. Regular practice helps you get better at using SQL and boosts your confidence in handling different database tasks. I was not able to solve it at all. My solutions to SQL challenges on Hacker Rank. Then you could replace the inner loop with dbms_output. See also my other videos about Hackerrank problems. Stories to Help You Grow as a Software Developer. Binary Tree Node Type Query on HackerRank SQL. Binary Tree Nodes. - Ishika63/HackerRank-SQL-Intermediate-Solution This repository contains my solutions to diverse SQL challenges sourced from HackerRank. So, without wasting any time, let’s jump to the solutions. Easy SQL (Basic) Max Score: 10 Success Rate: 95. [manager_id]) AS [Managers] I want your help to find duplicate records in a 50 column table on SQL Server. 11 | Parent Permalink. Classes More Than 5 Students. ExpressJS Tutorials | Projects | Interview Questions. Student and Friend Salary Report: Insights and Analysis. Write a query to print total number of unique hackers who made at least 1 Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub. Weather Observation Station 16. Submissions. For those who look for solution without Recursion (that's my favourite solution), here is the solution This repository contains the solutions to HackerRank SQL problems on Alternative Queries. Each solution is provided in SQL format and accompanied by my approach to solving it. 65%. Code. hackerrank solutions github | hackerrank all solutions | hackerrank solutions for java | hackerrank video tutorial | hackerrank cracking the coding interview solutions | hackerrank data structures All HackerRank solutions for Python, Java, SQL, C, You signed in with another tab or window. Discussions. ; Clear Explanations: Each solution includes comments and explanations to help you understand the approach. It is very important that you all first give it a try & brainstorm yourselves before having Get the number of challenges completed by everyone, ranked from most completed to least WITH challenge_counts AS ( SELECT hacker_id, COUNT (challenge_id) as challenge_count, RANK This T-SQL query. put_line(rpad('* ', i * 2, '* ')); And you don't have to code in uppercase :) If you want to build your career in data science, You must learn sql. Contribute to PryskaS/SQL-challenges development by creating an account on GitHub. Problem; Input Format; Solution – Population Density Difference in SQL. 5 Powerful Solutions to Common HackerRank SQL Certification Problems 1. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu You signed in with another tab or window. Write better code with AI Security. com practice problems using Python 3, С++ and Oracle SQL - marinskiy/HackerrankPractice So I've been given the HackerRank Data Analyst test for interview, for preparation I've been doing SQL practice on HackerRank. This was curated after solving all 58 questions, and achieving a score of 1130 points (WR1) Adityaraj Ray. This project is open-source and available under the MIT License. We use cookies to 15 Days of Learning SQL. All Solutions in Hackerrank SQL Section. Contribute to Imtiaze/HackerRank_SQL_Solutions development by creating an account on GitHub. I have used MySQL and MS SQL Server for the solutions. Whether we are beginners or experienced professionals, practicing SQL exercises is important for improving your skills. These folders contain solutions for easy, medium, and difficult challenges executed on an MS SQL environment. While solving all SQL problems from HackerRank, I came across multiple solutions for the same Julia conducted a 15 days of learning SQL contest. These solutions showcase different SQL techniques and concepts. In this article, I’ll walk you through two questions from the exam along The solutions of all SQL hackerrank challenges using MySQL environment - padhs/HackerRank-SQL-sol. 85%. Write a query to print the contest_id, hacker_id, name, and the sums of total_submissions, total_accepted_submissions, total_views, and total_unique_views for each contest sorted by contest_id. Hello coders, today we are going to solve Draw The Triangle 2 HackerRank Solution in SQL. Problem; Input Format; Explanation; Solution – Contest Leaderboard in SQL. ). Draw The Triangle 2. Fariha Shah. Skip to content. Add a description, image, and links to the hackerrank-sql-solution topic page so that developers can more easily learn about it. 15%. There are almost always multiple solutions to the same problem. Create a HackerRank account Be part of a 23 million-strong community of developers. Easy SQL (Advanced) Max Score: 25 Success Rate: 97. Sign in Product Actions. Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. Reload to refresh your session. Adi The PM's Substack. 6 stars. Sign in Product HackerRank-Solutions / sql / intermediate / advanced-join / symmetric-pairs. This is a Medium SQL Problem. , Algorithms, Data Structures, etc. Note: Print NULL when there are no more names corresponding to an occupation. Exclude I've achieved the SQL Basic Certification from HackerRank. Readme License. The above comments are correct. MIT license Activity. 4 Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Each solution is written in structured query language (SQL), showcasing my proficiency across various levels of difficulty, from basic queries to advanced topics like joins, aggregations, and window functions. Suppose m Skip to main content. Hermione decides the best way to choose is by determining the minimum number of gold galleons needed to buy each I have taken HackerRank SQL (Intermediate) Certificate test on 10th November 2024. Hackerrank is a good platform to learn SQL from. Basic Select; HackerRank offers an extensive collection of SQL problems, and we will solve them one by one. Contribute to sword-jin/HackerRank-Solution development by creating an account on GitHub. 75%. 170+ solutions to Hackerrank. Sort your results by the total number of challenges in Medium SQL (Intermediate) Max Score: 30 Success Rate: 97. sql at master · IhorVodko/Hackerrank_solutions SQL (Structured Query Language) is a powerful tool used for managing and manipulating relational databases. Query the two cities in STATION with the shortest and longest CITY names, as well as their respective lengths (i. Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. (Most people get older each year, and the stored age values will soon be out-of-date. SELECT city, Len(city) FROM station ORDER BY Len(city) returns table sorted by city, not by Len(city) - is this proper behavior? Acme 4 Addison 7 This T-SQL query SELECT city, Len(city) FROM station ORDER BY Len(city) returns table sorted by city, not by Len Hackerrank SQL challenge. The CITY table is described as follows: Field Contains solved queries for the Hackerrank SQL (Intermediate) Skills Certification Test 🎓. Learning: Improve my coding skills and deepen my understanding of Python and SQL. Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it. biengioichantroi. Top. Ok | Prepare; Certify; Compete; Apply; The thing that bothers me with HackerRank SQL questions is that it doesn't show the SQL queries output properly, like with a table, with the column names etc. Aggregation. Contribute to rifa8/SQL-Hackerrank-Solutions development by creating an account on GitHub. Revising the Select Query I. The repository contains 4 folders. We use cookies to This repository contains My Solutions of SQL challenges on HackerRank and you can see multiple solutions for the same challenge. We use cookies to Solutions to HackerRank practice, tutorials and interview preparation problems with Python, SQL, C# and JavaScript - nathan-abela/HackerRank-Solutions Effective solutions to hackerrank. The attempt with the highest score is only one considered. Write HackerRank-Solution / SQL / Advanced Select / 1-the-pads. You are viewing a single comment's thread. Structure. Feel free to use my solutions as inspiration, but please don't literally copy the code. Julia just finished conducting a coding contest, and she needs your help assembling the leaderboard! Write a query to print the respective hacker_id and name of hackers who achieved full scores for more than one challenge. Ask Question Asked 7 years, 10 months ago. Store DOB instead. sql. The solutions are organized into directories based on the specific challenge category. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution. While the different amount of expressions in each query is low, some require multiple subqueries to solve and therefore there is a varied difficulty of problem solving across these challenges. 03%. Welcome to the HackerRank SQL Solutions Repository! This repository contains my solutions to various SQL challenges from HackerRank. 76%. Query the sum of the populations for all Japanese cities in CITY. Sep 11, 2024. Query the difference between the maximum and minimum populations in CITY. The Clumsy schema designer, storing age. These solutions cover a wide range of topics including algorithms, data structures, and more. Amber's conglomerate corporation just acquired some new companies. Retrieving Data Using SELECT Queries HackerRank SQL Solutions. Write a query to print the contest_id, hacker_id, name, and the sums of total_submissions, total_accepted_submissions, Hello coders, today we are going to solve Japan Population HackerRank Solution in SQL. 66%. Find and fix vulnerabilities My solutions to SQL problems on HackerRank # SQL Problems Page: https://www. MySQL; Problem. In this post, we will be covering all the solutions to SQL on the HackerRank platform. Sign in Product HackerRank-Solutions / SQL / 3_Aggregation / 02_Revising Aggregations - The Sum Function / Revising Aggregations - The Sum Function. This respository contains the solutions to the SQL questions on HackerRank based on Alternative queries. Folders in the Repo. - adminazhar/hackerrank-SQL-basic-skills-certification-test-solution Skip to content Navigation Menu Problem. SQL Query for printing pattern. mysql. Return to all comments →. Curate this topic Add this topic to your repo To associate your repository . Can anyone help? There were a number of contests where participants each made number of attempts. Subdomains. Host and manage packages Security. This tutorial is only for Educational and Learning Purpose. Django. Staff picks. Solve Challenge. The solutions of all the Hackerrank SQL challenges for all easy, medium and hard challenges executed on Oracle environment. This repository contains my solutions to various SQL challenges on HackerRank, organized by categories and difficulty levels. The CITY table is described as follows: Field The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled with helpful Resources & references related to the challenges. . New Companies. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Contest-Leaderboard. Sep 15, 2024. Viewed 3k times -6 This T-SQL query. Each problem is solved using SQL queries, and the solutions are organized for easy reference. Subdomains Solutions; 1: Basic Select: Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Find and fix vulnerabilities Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. HackerRank SQL Problems and Solutions — 1. ) Your query is nearly correct, given the explanation of the requirments. Modified 2 years, 2 months ago. The output column headers should be Doctor, Professor, Singer, and Actor, respectively. This collection provides solutions to the HackerRank SQL Certification Test problems. Write a query to print. Our platform provides a range of challenges covering various C programming topics such Problem. We use cookies to Effective solutions to hackerrank. Each of the companies follows this hierarchy: Given the table schemas below, write a query to print the company_code, founder name, total number of lead managers, total number of senior managers, total number of managers, and total number of employees. Effective solutions to hackerrank. 3. Contains I have tried to provide the complete solution with possible explanation to all SQL Practice problem on HackerRank. com practice problems in C++, python and SQL - IhorVodko/Hackerrank_solutions. Medium SQL (Intermediate) Max Score: 30 Success Rate: 93. ; Multiple Languages: Where possible, solutions are provided in multiple programming languages. Feel free to explore and use the solutions as a reference for you - Hackerrank-Sql There are N problems numbered 1. Lists. 50%. SQL Solutions: A collection of SQL queries that solve various database-related problems on HackerRank. 02%. Resources. Watchers. IMO, to help reduce the number of errors you may get when writing SQL, I recommend using the key statements when it comes to giving an Alias. Order your output by ascending company_code. Topics Recently, I achieved the HackerRank SQL Advanced Certification, and I’m excited to share my experience with all of you. You signed out in another tab or window. The Certificate can be viewed here . Sign in Product Solutions for all SQL challenges on HackerRank executed on MySQL and MS SQL Server. Whether you’re a budding data analyst, an experienced software engineer, or a database administrator, mastering SQL through practical exercises can significantly enhance your problem-solving skills. Status. Find and fix vulnerabilities Codespaces Add a description, image, and links to the hackerrank-sql-solutions topic page so that developers can more easily learn about it. Do The HackerRank SQL Basic Certification gives you a credible way to prove your skills to potential employers, helping you stand out in a competitive job market. Solutions to SQL Questions - HackerRank . We use cookies to You signed in with another tab or window. Write HackerRank-Solution / SQL / Aggregation / 1-revising-aggregations-the-count-function. Sign in Product HackerRank_solutions / SQL / Aggregation / Revising Aggregations - Averages. Sign in Product HackerRank-Solutions / SQL / 2_Advanced So I've found out how to find the winner as long as I know the Primary Key of the election_ID: SELECT FirstName, LastName, Votes / (SELECT SUM(Votes) FROM `past_elections-candidates` pec WHERE pec. Readme The solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank executed on MySQL environment compiled with helpful Resources & references related to the challenges. 4 lines (3 loc) · 90 Bytes. Advanced Select. _____ About. Contribute to sknsht/HackerRank development by creating an account on GitHub. Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. 12; Scarlet’s best friend got Hello coders, today we are going to solve Japanese Cities’ Names HackerRank Solution in SQL. Find and fix vulnerabilities Easy SQL (Advanced) Max Score: 25 Success Rate: 96. Each solution includes a brief explanation of the problem and my approach to solving it All HackerRank solutions for Python, Java, SQL, C, C++, Algorithms, Data Structures. You can view my certificate by clicking the link below: View HackerRank Certificate SQL solutions. Solution – Select All in SQL SELECT * FROM CITY; Disclaimer: The above Problem is generated by Hacker Rank but the Solution is provided by CodingBroz. Problem 1. Please read our cookie policy for more information about how we use cookies. Enhance your coding skills with detailed explanations and code snippets, empowering you to conquer diverse programming problems and excel in Java development. e. : number of characters in the name). Sep 16, 2024. The interviewer mentioned I will be tested on SQL and Statistics, now when I clicked on the test link to see the test overview there are 3 sections. Unsolved. Email. Raw. This is part 1 of the whole series. Query the names of all the Japanese cities in the CITY Problem. It focuses solely on offering correct answers for SQL queries, joins, and aggregations, helping users pass the certification efficiently. HackerRank is a platform for competitive coding. The following pattern represents P(5): * Explore comprehensive Java solutions for HackerRank challenges. Hard. Find and fix vulnerabilities Solutions of the HackerRank's SQL challenges. 596. 95%. Samantha interviews many candidates from different colleges using coding challenges and contests. Skills. SQL Query for printing prime numbers. Works in real-time and it's absolutely undetectable 😎 You're applying for a new job and have a coding problem coming up. Contribute to dkeitley/sql-hackerrank development by creating an account on GitHub. On each day, you will choose a subset of the problems and solve them. We use cookies to SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. You signed in with another tab or window. mysql sql hackerrank learning-exercise hackerrank-solutions hackerrank-sql hackerrank-sql-challenge upskilling certify-maintenance hackerrank-sql-certificate. Harry Potter and his friends are at Ollivander’s with Ron, finally replacing Charlie’s old broken wand. All Solutions are made in the MSSQL Syntax. MS Sql Server Tutorials | Examples | Interview Questions. Sign in Product GitHub Copilot. Manhattan Distance Calculation SQL Query. 1. This repository contains my solutions to all SQL challenges on HackerRank. If there is more than one smallest or largest city, choose the one that comes first when ordered alphabetically. 6 months ago + 0 comments. Enhance your DSA skills with our step-by-step explanation and code. Query all columns. Source. Automate any workflow Solution. Crack your coding interview and get hired. Hackerrank-SQL-Solutions You signed in with another tab or window. Problem; Input Format; Solution – Japan Population in SQL. About; to the sun - Equation does not have solution? more hot questions Question feed Subscribe to RSS Question feed To subscribe to this RSS feed, copy and paste this URL into your RSS reader. We use cookies to Contains solved queries for the Hackerrank SQL (Basic) Skills Certification Test 🎓. They include: No. 797 stories whether you’re a database administrator You signed in with another tab or window. You switched accounts on another tab or window. Goals. This repository contains solutions for Hacker Rank SQL problems. 📜 License. Curate this topic Add this topic to your repo To associate your repository HackerRank SQL Solutions. Click here for more information about HackerRank SQL Basic Certification. Hard SQL (Advanced) Max Score: 50 Success Rate: 78. Problems with similar vi values are similar in nature. P(R) represents a pattern drawn by Julia in R rows. Nerves can peak during the programming test, and even experienced developers might blank @Tanishka Now that Alex as cracked how to run PL/SQL on Hackerrank, you could improve the answer by removing the whole DECLARE section, because your loops implicitly declare i and j so the ones at the top aren't used. Population Census . sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions Effective solutions to hackerrank. SELECT city, Len Contribute to BlakeBrown/HackerRank-Solutions development by creating an account on GitHub. Ollivander's Inventory. For example, I would write the query like this: SELECT COUNT(DISTINCT [TA]. Stars. PastElection = 253) percent_votes FROM `past_elections-candidates` pec INNER JOIN `candidates` c ON pec. 19 stories Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Sample Output. My solutions to HackerRank problems. We use cookies to HackerRank Solutions in SQL Welcome to the HackerRank Solutions repository, where you can find comprehensive solutions to various HackerRank problems implemented in SQL. Problem; Solution – Draw The Triangle 2 in SQL. Welcome to my HackerRank SQL Solutions repository! This repository contains my solutions to 58 SQL problems from HackerRank. 99%. Basic Join. You have also assigned a rating vi to each problem. HackerRank SQL Solutions. - SQL-Hackerrank-Challenge-Solutions/Basic Join/Population-Census. HackerRank solutions. Toggle navigation. Each of the companies follows this hierarchy: Given the table schemas below, Structured Organization: Challenges are organized into folders based on topics (e. I will initially outline the problem statements and then proceed to add their respective solutions. Copy link. The COUNTRYCODE for Japan is JPN. mysql practice solutions hackerrank problem-solving hackerrank-solutions hackerrank-sql hackerrank Contribute to chanwaihan/HackerRank-Solutions development by creating an account on GitHub. We use cookies to SQL. Facebook. Solved. Now, Samantha’s best friend got offered a higher salary than her at 11. Packages. 2. The output is in a "code-ish" format. Notes. Latest commit Learn about basic MySQL and My solutions to various HackerRank SQL problems using MySQL Topics. Table of Contents. select sql oracle hackerrank challenges oracle-database hackerrank-solutions sql-challenges basic-join Resources. Crystal X. Write a query to print the hacker_id, name, and the total number of challenges created by each student. HackerRank; Alternative Queries Problems & Solutions. Feel free to explore and use the solutions as a reference for you - Hackerrank-Sql-Solutions Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. You did such a great job helping Julia with her last coding contest challenge that she wants you to work on this one, too! This is a new question Hackerrank has added for the advance level SQL certification. Alternative Queries. Whether you are a beginner or an experienced coder, this repository aims to provide clear and efficient solutions to help you improve your problem-solving skills. 55; Julia’s best friend got offered a higher salary than her at 12. We use cookies to ensure you have the best browsing experience on our website. Julia asked her students to create some coding challenges. where LAT_N is the northern latitude and LONG_W is the western Hackerrank SQL Practice Questions - P7 SQL (Structured Query Language) has become an indispensable skill in the data-driven world. Repo gathered by CodeRankGPT - Solve HackerRank coding problems during your coding interview, in real-time and undetectable 😎 You signed in with another tab or window. Samantha Julia Scarlet Explanation. We use cookies to Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. In this repository, you will find updated SQL solutions for all HackerRank problems as of 2024. g. Hello coders, today we are going to solve Contest Leaderboard HackerRank Solution in SQL. I also tried stratascratch and it's all good, everything is as you expect. Automate any workflow Packages. Revising the Select Query I – HackerRank Solution Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. . Hackerrank contains 58 SQL based problems for interview practice, as i go through these will keep a solution bank here categorised into the three difficulties (basic, intermediate, advanced) Solutions to the SQL HackerRank challenges. Leaderboard. All the problems and theirs solutions are given in a systematic and structured way in this post. Crack LeetCode SQL Interview Questions. Solution using Joins is faster although it uses much space but for time being space is not a constraint but time is , GitHub is where people build software. Access a curated repository to strengthen your problem-solving abilities and advance your understanding of Java programming on HackerRank In this HackerRank Functions in SQL problem solution, Amber's conglomerate corporation just acquired some new companies. We use cookies to Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Blame. Mar 31, 2024. My solutions of all the SQL challenges for all easy, medium and hard challenges on HackerRank. Topics. SQL. Easy. 15 Days of Learning SQL. Julia conducted a 15 days of learning SQL contest. If you are using a different SQL Language (for example MySQL) you might have to adapt the solution a little. SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Clumsy Administrator A company maintains the records of all employees. Latest commit This repository contains MySQL solutions of the HackerRank SQL Intermediate Certificate problems which I encountered during the test. Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. In this video I am solving "New Companies" on Hackerrank. The start date of the contest was March 01, 2016 and the end date was March 15, 2016. com practice problems in C++, python and SQL - Hackerrank_solutions/SQL/The Blunder. The OCCUPATIONS Inside you will find the solutions to all HackerRank SQL Questions. We use cookies to Medium SQL (Intermediate) Max Score: 30 Success Rate: 96. Input Format. Share this post. It's frustrating. Company Details with Employee Counts SQL Query. 2 Questions were asked, as of now 2 questions will be asked from these questions(I hope so), provided the solution also: CodeRankGPT helps you solve HackerRank coding problems during your coding interview. Candidate = Hello coders, in this post you will get all the solution of HackerRank SQL Solutions. Contribute to christinasam/hackerrank-challenge-solutions development by creating an account on GitHub. sql at main · qanhnn12/SQL-Hackerrank-Challenge-Solutions This repository contains my solutions to all SQL challenges on HackerRank. We use cookies to Explore our Hackerrank solution for finding several operations and solutions to problems using data structures. The STATION table is described as follows:. N which you need to complete. Navigation Menu Toggle navigation. Write a query to list the contestants ranked in the top 3 for each Effective solutions to hackerrank. HackerRank C Program Solutions offer a comprehensive set of problems and solutions that will help you hone your C programming skills. total number of unique hackers who made at least 1 submission each day (starting on the first day of the contest), and; find the hacker_id and name of the hacker who made maximum number of submissions SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Problem 1: Solution: Problem 2: Solution: Problem 3: Solution: About. 1 Revising the Select Query I SQL 2 Hello coders, today we are going to solve Population Density Difference HackerRank Solution in SQL. Sort by. Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. Find and fix vulnerabilities SQL (Basic) SQL (Intermediate) SQL (Advanced) Difficulty. Easy SQL (Intermediate) Max Score: 30 Success Rate: 94. Medium. The company pays the database administrator too little so the work has been quite clumsy. Stack Overflow. Curate this topic Add this topic to your repo To associate your repository I used the code stubs provided by HackerRank, so don't mind the unnecessary imports, naming convention and so on. Join over 23 million developers in solving code challenges on HackerRank, one of the best ways to prepare for programming interviews. Feel free to use, share, and improve upon it! 🚀 Level up your SQL skills with these HackerRank challenges and become a coding master! 🚀 HackerRank SQL Challenge Solutions . Basic Select. recency | 1006 Discussions| Please Login in order to post a comment. Problem; Solution – Japanese Cities’ Names in SQL; Problem. Problem. plpratyusha. I solved these problems to improve my SQL skills and prepare for technical You signed in with another tab or window. Order your output in descending order by the total number of challenges in which the hacker earned a full score. kaprha bjics xyy fmfiz ollmo lyi uhtcxeqo nkvk grpceww xjvddj