The House of Online Judge Series' Articles

Cover image for Top Competitors | HackerRank | MSSQL

Retiago Drago

Nov 10 '22

Top Competitors | HackerRank | MSSQL

#hackerrank #computerscience #tutorial #mssql

8

2 min read

Cover image for Reverse String | LeetCode | Python

Retiago Drago

Nov 11 '22

Reverse String | LeetCode | Python

#leetcode #computerscience #tutorial #python

3

1 min read

Cover image for Merge the Tools! | HackerRank | Python

Retiago Drago

Nov 12 '22

Merge the Tools! | HackerRank | Python

#hackerrank #computerscience #tutorial #python

2

3 min read

Cover image for Combine Two Tables | LeetCode | MSSQL

Retiago Drago

May 10 '23

Combine Two Tables | LeetCode | MSSQL

#leetcode #computerscience #codenewbie #mssql

2 min read

Cover image for collections.Counter() | HackerRank | Python

Retiago Drago

May 11 '23

collections.Counter() | HackerRank | Python

#hackerrank #codenewbie #beginners #python

1

2 min read

Cover image for Ollivander's Inventory | HackerRank | MSSQL

Retiago Drago

May 12 '23

Ollivander's Inventory | HackerRank | MSSQL

#hackerrank #mssql #codenewbie #beginners

7

3 min read

Cover image for Day 15: Linked List | HackerRank | Python

Retiago Drago

May 13 '23

Day 15: Linked List | HackerRank | Python

#python #codenewbie #beginners #hackerrank

1

4 min read

Cover image for Customer Placing the Largest Number of Orders | LeetCode | MSSQL

Retiago Drago

May 14 '23

Customer Placing the Largest Number of Orders | LeetCode | MSSQL

#leetcode #mssql #beginners #codenewbie

5

2 min read

Cover image for Triangle Judgement | LeetCode | MSSQL

Retiago Drago

May 15 '23

Triangle Judgement | LeetCode | MSSQL

#leetcode #beginners #codenewbie #mssql

1

2 min read

Cover image for Sales Person | LeetCode | MSSQL

Retiago Drago

May 16 '23

Sales Person | LeetCode | MSSQL

#beginners #codenewbie #leetcode #mssql

2

3 min read

Cover image for Day 16: Exceptions - String to Integer | HackerRank | Python

Retiago Drago

May 17 '23

Day 16: Exceptions - String to Integer | HackerRank | Python

#hackerrank #beginners #codenewbie #python

2

3 min read

Cover image for Employees Earning More Than Their Managers | LeetCode | MSSQL

Retiago Drago

May 18 '23

Employees Earning More Than Their Managers | LeetCode | MSSQL

#leetcode #codenewbie #beginners #mssql

2

2 min read

Cover image for Department Top Three Salaries | LeetCode | MSSQL

Retiago Drago

May 19 '23

Department Top Three Salaries | LeetCode | MSSQL

#mssql #leetcode #beginners #codenewbie

2

2 min read

Cover image for Challenges | HackerRank | MSSQL

Retiago Drago

May 19 '23

Challenges | HackerRank | MSSQL

#hackerrank #beginners #codenewbie #mssql

10

4 min read

Cover image for Trips and Users | LeetCode | MSSQL

Retiago Drago

May 20 '23

Trips and Users | LeetCode | MSSQL

#leetcode #mssql #codenewbie #beginners

1

5 min read

Cover image for Contest Leaderboard | HackerRank | MSSQL

Retiago Drago

May 21 '23

Contest Leaderboard | HackerRank | MSSQL

#codenewbie #beginners #hackerrank #mssql

2

4 min read

Cover image for Duplicate Emails | LeetCode | MSSQL

Retiago Drago

May 22 '23

Duplicate Emails | LeetCode | MSSQL

#leetcode #mssql #beginners #codenewbie

2 min read

Cover image for Customers Who Never Order | LeetCode | MSSQL

Retiago Drago

May 23 '23

Customers Who Never Order | LeetCode | MSSQL

#beginners #leetcode #codenewbie #mssql

3 min read

Cover image for Delete Duplicate Emails | LeetCode | MSSQL

Retiago Drago

May 23 '23

Delete Duplicate Emails | LeetCode | MSSQL

#leetcode #beginners #codenewbie #mssql

3

1

2 min read

Cover image for Rising Temperature | LeetCode | MSSQL

Retiago Drago

May 24 '23

Rising Temperature | LeetCode | MSSQL

#leetcode #beginners #codenewbie #mssql

2

2 min read

Cover image for Employee Bonus | LeetCode | MSSQL

Retiago Drago

May 25 '23

Employee Bonus | LeetCode | MSSQL

#codenewbie #beginners #leetcode #mssql

4

1

2 min read

Cover image for Find Customer Referee | LeetCode | MSSQL

Retiago Drago

May 26 '23

Find Customer Referee | LeetCode | MSSQL

#mssql #leetcode #beginners #codenewbie

2 min read

Cover image for Big Countries | LeetCode | MSSQL

Retiago Drago

May 27 '23

Big Countries | LeetCode | MSSQL

#leetcode #mssql #codenewbie #beginners

1

3

2 min read

Cover image for Classes More Than 5 Students | LeetCode | MSSQL

Retiago Drago

May 28 '23

Classes More Than 5 Students | LeetCode | MSSQL

#leetcode #beginners #codenewbie #mssql

1

2 min read

Cover image for Biggest Single Number | LeetCode | MSSQL

Retiago Drago

May 29 '23

Biggest Single Number | LeetCode | MSSQL

#leetcode #beginners #codenewbie #mssql

5

2 min read

Cover image for Not Boring Movies | LeetCode | MSSQL

Retiago Drago

May 30 '23

Not Boring Movies | LeetCode | MSSQL

#leetcode #mssql #beginners #codenewbie

1

2 min read

Cover image for Swap Salary | LeetCode | MSSQL

Retiago Drago

Jun 2 '23

Swap Salary | LeetCode | MSSQL

#beginners #codenewbie #leetcode #mssql

3 min read

Cover image for Actors and Directors Who Cooperated At Least Three Times | LeetCode | MSSQL

Retiago Drago

Jun 3 '23

Actors and Directors Who Cooperated At Least Three Times | LeetCode | MSSQL

#leetcode #beginners #tutorial #mssql

1

3 min read

Cover image for Product Sales Analysis I | LeetCode | MSSQL

Retiago Drago

Jun 4 '23

Product Sales Analysis I | LeetCode | MSSQL

#tutorial #leetcode #mssql #codenewbie

4

4 min read

Cover image for Project Employees I | LeetCode | MSSQL

Retiago Drago

Jun 5 '23

Project Employees I | LeetCode | MSSQL

#beginners #tutorial #mssql #leetcode

1

2 min read

Cover image for Article Views I | LeetCode | MSSQL

Retiago Drago

Jun 6 '23

Article Views I | LeetCode | MSSQL

#beginners #tutorial #mssql #leetcode

1

2 min read

Cover image for Reformat Department Table | LeetCode | MSSQL

Retiago Drago

Jun 7 '23

Reformat Department Table | LeetCode | MSSQL

#mssql #beginners #tutorial #leetcode

4 min read

Cover image for Human Traffic of Stadium | LeetCode | MSSQL

Retiago Drago

Jun 9 '23

Human Traffic of Stadium | LeetCode | MSSQL

#leetcode #mssql #beginners #codenewbie

4 min read

Cover image for Second Highest Salary | LeetCode | MSSQL

Retiago Drago

Jun 9 '23

Second Highest Salary | LeetCode | MSSQL

#leetcode #beginners #tutorial #codenewbie

4

2 min read

Cover image for Nth Highest Salary | LeetCode | MSSQL

Retiago Drago

Jun 11 '23

Nth Highest Salary | LeetCode | MSSQL

#codenewbie #beginners #leetcode #mssql

2

2 min read

Cover image for Rank Scores | LeetCode | MSSQL

Retiago Drago

Jun 12 '23

Rank Scores | LeetCode | MSSQL

#leetcode #mssq #codenewbie #beginners

1

2 min read

Cover image for Consecutive Numbers | LeetCode | MSSQL

Retiago Drago

Jun 12 '23

Consecutive Numbers | LeetCode | MSSQL

#leetcode #codenewbie #beginners #mssql

43

1

4 min read

Cover image for Department Highest Salary | LeetCode | MSSQL

Retiago Drago

Jun 13 '23

Department Highest Salary | LeetCode | MSSQL

#leetcode #mssql #codenewbie #beginners

4 min read

Cover image for Game Play Analysis IV | LeetCode | MSSQL

Retiago Drago

Jun 16 '23

Game Play Analysis IV | LeetCode | MSSQL

#leetcode #mssql #programming #tutorial

7

4 min read

Cover image for Managers with at Least 5 Direct Reports | LeetCode | MSSQL

Retiago Drago

Jun 17 '23

Managers with at Least 5 Direct Reports | LeetCode | MSSQL

#leetcode #mssql #tutorial #programming

14

1

3 min read

Cover image for Queries Quality and Percentage | LeetCode | MSSQL

Retiago Drago

Jun 19 '23

Queries Quality and Percentage | LeetCode | MSSQL

#mssql #leetcode #beginners #tutorial

3 min read

Cover image for Average Selling Price | LeetCode | MSSQL

Retiago Drago

Jun 20 '23

Average Selling Price | LeetCode | MSSQL

#mssql #leetcode #programming #codenewbie

11

1

3 min read

Cover image for Students and Examinations | LeetCode | MSSQL

Retiago Drago

Jun 21 '23

Students and Examinations | LeetCode | MSSQL

#leetcode #learning #tutorial #mssql

9

4 min read

Cover image for List the Products Ordered in a Period | LeetCode | MSSQL

Retiago Drago

Jun 22 '23

List the Products Ordered in a Period | LeetCode | MSSQL

1

3 min read

Cover image for Replace Employee ID With The Unique Identifier | LeetCode | MSSQL

Retiago Drago

Jun 23 '23

Replace Employee ID With The Unique Identifier | LeetCode | MSSQL

#leetcode #mssql #tutorial #beginners

3

3 min read

Cover image for Top Travellers | LeetCode | MSSQL

Retiago Drago

Jun 24 '23

Top Travellers | LeetCode | MSSQL

#leetcode #tutorial #mssql #programming

1

3 min read

Cover image for SQL Project Planning | HackerRank | MSSQL

Retiago Drago

Jun 25 '23

SQL Project Planning | HackerRank | MSSQL

#hackerrank #programming #tutorial #mssql

5

2 min read

Cover image for Group Sold Products By The Date | LeetCode | MSSQL

Retiago Drago

Jun 26 '23

Group Sold Products By The Date | LeetCode | MSSQL

#leetcode #beginners #tutorial #mssql

1

2 min read

Cover image for Find Users With Valid E-Mails | LeetCode | MSSQL

Retiago Drago

Jun 27 '23

Find Users With Valid E-Mails | LeetCode | MSSQL

#beginners #tutorial #leetcode #mssql

5

4 min read

Cover image for Patients With a Condition | LeetCode | MSSQL

Retiago Drago

Jun 28 '23

Patients With a Condition | LeetCode | MSSQL

#beginners #programming #leetcode #mssql

3 min read

Cover image for Customer Who Visited but Did Not Make Any Transactions | LeetCode | MSSQL

Retiago Drago

Jun 29 '23

Customer Who Visited but Did Not Make Any Transactions | LeetCode | MSSQL

#leetcode #mssql #tutorial #learning

6

5 min read

Cover image for Bank Account Summary II | LeetCode | MSSQL

Retiago Drago

Jun 30 '23

Bank Account Summary II | LeetCode | MSSQL

#leetcode #mssql #programming #tutorial

1

3 min read

Cover image for Percentage of Users Attended a Contest | LeetCode | MSSQL

Retiago Drago

Jul 1 '23

Percentage of Users Attended a Contest | LeetCode | MSSQL

#leetcode #programming #tutorial #mssql

3 min read

Cover image for Average Time of Process per Machine | LeetCode | MSSQL

Retiago Drago

Jul 3 '23

Average Time of Process per Machine | LeetCode | MSSQL

#leetcode #learning #tutorial #mssql

8

4 min read

Cover image for Fix Names in a Table | LeetCode | MSSQL

Retiago Drago

Jul 4 '23

Fix Names in a Table | LeetCode | MSSQL

#leetcode #learning #programming #mssql

2

2 min read

Cover image for Invalid Tweets | LeetCode | MSSQL

Retiago Drago

Jul 5 '23

Invalid Tweets | LeetCode | MSSQL

#leetcode #programming #codenewbie #mssql

1

2 min read

Cover image for Placements | HackerRank | MSSQL

Retiago Drago

Jul 6 '23

Placements | HackerRank | MSSQL

#mssql #database #tutorial #hackerrank

4

3 min read

Cover image for Symmetric Pairs | HackerRank | MSSQL

Retiago Drago

Jul 7 '23

Symmetric Pairs | HackerRank | MSSQL

#mssql #hackerrank #database #tutorial

12

1

3 min read

Cover image for Daily Leads and Partners | LeetCode | MSSQL

Retiago Drago

Jul 8 '23

Daily Leads and Partners | LeetCode | MSSQL

#leetcode #mssql #tutorial #database

1

3 min read

Cover image for Find Followers Count | LeetCode | MSSQL

Retiago Drago

Jul 9 '23

Find Followers Count | LeetCode | MSSQL

#leetcode #mssql #database #tutorial

1

2 min read

Cover image for The Number of Employees Which Report to Each Employee | LeetCode | MSSQL

Retiago Drago

Jul 10 '23

The Number of Employees Which Report to Each Employee | LeetCode | MSSQL

#leetcode #mssql #tutorial #database

1

4 min read

Cover image for Find Total Time Spent by Each Employee | LeetCode | MSSQL

Retiago Drago

Jul 12 '23

Find Total Time Spent by Each Employee | LeetCode | MSSQL

#leetcode #database #mssql #tutorial

2

2 min read

Cover image for Recyclable and Low Fat Products | LeetCode | MSSQL

Retiago Drago

Jul 23 '23

Recyclable and Low Fat Products | LeetCode | MSSQL

#mssql #database #leetcode #tutorial

1

2 min read