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The House of Online Judge Series' Articles
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Top Competitors | HackerRank | MSSQL
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Nov 10 '22
Top Competitors | HackerRank | MSSQL
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2 min read
Reverse String | LeetCode | Python
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Nov 11 '22
Reverse String | LeetCode | Python
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1 min read
Merge the Tools! | HackerRank | Python
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Nov 12 '22
Merge the Tools! | HackerRank | Python
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3 min read
Combine Two Tables | LeetCode | MSSQL
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May 10
Combine Two Tables | LeetCode | MSSQL
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2 min read
collections.Counter() | HackerRank | Python
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May 11
collections.Counter() | HackerRank | Python
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2 min read
Ollivander's Inventory | HackerRank | MSSQL
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May 12
Ollivander's Inventory | HackerRank | MSSQL
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3 min read
Day 15: Linked List | HackerRank | Python
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May 13
Day 15: Linked List | HackerRank | Python
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4 min read
Customer Placing the Largest Number of Orders | LeetCode | MSSQL
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May 14
Customer Placing the Largest Number of Orders | LeetCode | MSSQL
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2 min read
Triangle Judgement | LeetCode | MSSQL
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May 15
Triangle Judgement | LeetCode | MSSQL
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2 min read
Sales Person | LeetCode | MSSQL
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May 16
Sales Person | LeetCode | MSSQL
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3 min read
Day 16: Exceptions - String to Integer | HackerRank | Python
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May 17
Day 16: Exceptions - String to Integer | HackerRank | Python
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3 min read
Employees Earning More Than Their Managers | LeetCode | MSSQL
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May 18
Employees Earning More Than Their Managers | LeetCode | MSSQL
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2 min read
Department Top Three Salaries | LeetCode | MSSQL
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May 19
Department Top Three Salaries | LeetCode | MSSQL
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2 min read
Challenges | HackerRank | MSSQL
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May 19
Challenges | HackerRank | MSSQL
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4 min read
Trips and Users | LeetCode | MSSQL
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May 20
Trips and Users | LeetCode | MSSQL
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5 min read
Contest Leaderboard | HackerRank | MSSQL
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May 21
Contest Leaderboard | HackerRank | MSSQL
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4 min read
Duplicate Emails | LeetCode | MSSQL
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May 22
Duplicate Emails | LeetCode | MSSQL
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2 min read
Customers Who Never Order | LeetCode | MSSQL
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May 23
Customers Who Never Order | LeetCode | MSSQL
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3 min read
Delete Duplicate Emails | LeetCode | MSSQL
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May 23
Delete Duplicate Emails | LeetCode | MSSQL
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2 min read
Rising Temperature | LeetCode | MSSQL
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May 24
Rising Temperature | LeetCode | MSSQL
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2 min read
Employee Bonus | LeetCode | MSSQL
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May 25
Employee Bonus | LeetCode | MSSQL
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2 min read
Find Customer Referee | LeetCode | MSSQL
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May 26
Find Customer Referee | LeetCode | MSSQL
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2 min read
Big Countries | LeetCode | MSSQL
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May 27
Big Countries | LeetCode | MSSQL
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2 min read
Classes More Than 5 Students | LeetCode | MSSQL
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May 28
Classes More Than 5 Students | LeetCode | MSSQL
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2 min read
Biggest Single Number | LeetCode | MSSQL
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May 29
Biggest Single Number | LeetCode | MSSQL
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2 min read
Not Boring Movies | LeetCode | MSSQL
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May 30
Not Boring Movies | LeetCode | MSSQL
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2 min read
Swap Salary | LeetCode | MSSQL
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Jun 2
Swap Salary | LeetCode | MSSQL
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3 min read
Actors and Directors Who Cooperated At Least Three Times | LeetCode | MSSQL
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Jun 3
Actors and Directors Who Cooperated At Least Three Times | LeetCode | MSSQL
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3 min read
Product Sales Analysis I | LeetCode | MSSQL
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Jun 4
Product Sales Analysis I | LeetCode | MSSQL
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4 min read
Project Employees I | LeetCode | MSSQL
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Jun 5
Project Employees I | LeetCode | MSSQL
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2 min read
Article Views I | LeetCode | MSSQL
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Jun 6
Article Views I | LeetCode | MSSQL
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2 min read
Reformat Department Table | LeetCode | MSSQL
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Jun 7
Reformat Department Table | LeetCode | MSSQL
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4 min read
Human Traffic of Stadium | LeetCode | MSSQL
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Jun 9
Human Traffic of Stadium | LeetCode | MSSQL
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4 min read
Second Highest Salary | LeetCode | MSSQL
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Jun 9
Second Highest Salary | LeetCode | MSSQL
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2 min read
Nth Highest Salary | LeetCode | MSSQL
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Jun 11
Nth Highest Salary | LeetCode | MSSQL
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2 min read
Rank Scores | LeetCode | MSSQL
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Jun 12
Rank Scores | LeetCode | MSSQL
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2 min read
Consecutive Numbers | LeetCode | MSSQL
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Jun 12
Consecutive Numbers | LeetCode | MSSQL
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4 min read
Department Highest Salary | LeetCode | MSSQL
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Jun 13
Department Highest Salary | LeetCode | MSSQL
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4 min read
Game Play Analysis IV | LeetCode | MSSQL
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Jun 16
Game Play Analysis IV | LeetCode | MSSQL
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4 min read
Managers with at Least 5 Direct Reports | LeetCode | MSSQL
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Jun 17
Managers with at Least 5 Direct Reports | LeetCode | MSSQL
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3 min read
Queries Quality and Percentage | LeetCode | MSSQL
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Jun 19
Queries Quality and Percentage | LeetCode | MSSQL
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3 min read
Average Selling Price | LeetCode | MSSQL
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Jun 20
Average Selling Price | LeetCode | MSSQL
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3 min read
Students and Examinations | LeetCode | MSSQL
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Jun 21
Students and Examinations | LeetCode | MSSQL
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4 min read
List the Products Ordered in a Period | LeetCode | MSSQL
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Jun 22
List the Products Ordered in a Period | LeetCode | MSSQL
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3 min read
Replace Employee ID With The Unique Identifier | LeetCode | MSSQL
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Jun 23
Replace Employee ID With The Unique Identifier | LeetCode | MSSQL
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3 min read
Top Travellers | LeetCode | MSSQL
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Jun 24
Top Travellers | LeetCode | MSSQL
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3 min read
SQL Project Planning | HackerRank | MSSQL
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Jun 25
SQL Project Planning | HackerRank | MSSQL
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2 min read
Group Sold Products By The Date | LeetCode | MSSQL
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Jun 26
Group Sold Products By The Date | LeetCode | MSSQL
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2 min read
Find Users With Valid E-Mails | LeetCode | MSSQL
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Jun 27
Find Users With Valid E-Mails | LeetCode | MSSQL
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4 min read
Patients With a Condition | LeetCode | MSSQL
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Jun 28
Patients With a Condition | LeetCode | MSSQL
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3 min read
Customer Who Visited but Did Not Make Any Transactions | LeetCode | MSSQL
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Jun 29
Customer Who Visited but Did Not Make Any Transactions | LeetCode | MSSQL
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5 min read
Bank Account Summary II | LeetCode | MSSQL
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Jun 30
Bank Account Summary II | LeetCode | MSSQL
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3 min read
Percentage of Users Attended a Contest | LeetCode | MSSQL
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Jul 1
Percentage of Users Attended a Contest | LeetCode | MSSQL
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3 min read
Average Time of Process per Machine | LeetCode | MSSQL
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Jul 3
Average Time of Process per Machine | LeetCode | MSSQL
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4 min read
Fix Names in a Table | LeetCode | MSSQL
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Jul 4
Fix Names in a Table | LeetCode | MSSQL
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2 min read
Invalid Tweets | LeetCode | MSSQL
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Jul 5
Invalid Tweets | LeetCode | MSSQL
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2 min read
Placements | HackerRank | MSSQL
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Jul 6
Placements | HackerRank | MSSQL
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3 min read
Symmetric Pairs | HackerRank | MSSQL
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Jul 7
Symmetric Pairs | HackerRank | MSSQL
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3 min read
Daily Leads and Partners | LeetCode | MSSQL
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Jul 8
Daily Leads and Partners | LeetCode | MSSQL
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3 min read
Find Followers Count | LeetCode | MSSQL
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Jul 9
Find Followers Count | LeetCode | MSSQL
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2 min read
The Number of Employees Which Report to Each Employee | LeetCode | MSSQL
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Jul 10
The Number of Employees Which Report to Each Employee | LeetCode | MSSQL
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4 min read
Find Total Time Spent by Each Employee | LeetCode | MSSQL
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Jul 12
Find Total Time Spent by Each Employee | LeetCode | MSSQL
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2 min read
Recyclable and Low Fat Products | LeetCode | MSSQL
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Jul 23
Recyclable and Low Fat Products | LeetCode | MSSQL
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2 min read
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