4 minutes 26 seconds1527. Patients With a Condition – SQL LIKE Query for Pattern Matching 🔍
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Videos
Problem walkthroughs, algorithms from scratch and quick tips, each with notes and the problem to practise.
leetcode sql 50
Watch in order50 videos
- 4 minutes 26 seconds
2 minutes 38 seconds1667. Fix Names in a Table – Clean & Format Strings in SQL 🧼
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9 minutes 12 seconds185. Department Top Three Salaries – SQL Ranking Made Easy! 🏆
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13 minutes 6 seconds585. Investments in 2016💰
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13 minutes 19 seconds602. Friend Requests II – Who Has the Most Friends in SQL? 🔍
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20 minutes 52 seconds1321. Restaurant Growth – 📊 SQL Rolling Average Made Simple!
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19 minutes 24 seconds1341. Movie Rating
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8 minutes 36 seconds626. Exchange Seats – SQL Logic You NEED to Know! 🚀
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7 minutes 55 seconds👨💼 Employees Whose Manager Left the Company | MySQL SQL Query Explained 🚀
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14 minutes 32 seconds💰 Count Salary Categories | MySQL SQL Query Explained 📊
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9 minutes 49 seconds🚌 Last Person to Fit in the Bus | MySQL SQL Query Explained 🚀
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11 minutes 56 seconds🚀 Find Product Price at a Given Date 🛒 | MySQL SQL Query Explained 💡
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30 days of javascript leetcode
Watch in order30 videos
5 minutes 9 seconds2726. Calculator with Method Chaining | JavaScript Class
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4 minutes 9 seconds2695. Array Wrapper | JavaScript Class Magic
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18 minutes 50 seconds2694. Event Emitter | JavaScript Pub/Sub Pattern
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14 minutes 59 seconds2705. Compact Object | Remove Empty Values from Object in JavaScript
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12 minutes 55 seconds2625. Flatten Deeply Nested Array | JavaScript Recursion Mastery 🔁
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9 minutes 7 seconds2722. Join Two Arrays by ID | JavaScript Object Merge 🔗
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4 minutes 57 seconds2724. Sort By – Master Custom Sorting in JavaScript! 🔥
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4 minutes 42 seconds2631. groupBy() – JavaScript Array Prototype Power!
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3 minutes 17 seconds2619. Get Last Element from Array in JavaScript
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7 minutes 45 seconds2677. Chunk Array | JavaScript Array Trick
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2 minutes 53 seconds2727. Is Object Empty? | One-Liner JavaScript Trick
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6 minutes 57 seconds2721. Run Async Functions in Parallel | JavaScript PromiseAll Clone
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Top interview 150 - leetcode
Watch in order20 videos
8 minutes 16 seconds19. Length of Last Word – LeetCode 58 ✍️ 2 Clean Approaches | Forward Scan vs Backward Scan
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11 minutes 21 seconds18. Integer to Roman – LeetCode 12 🏛️ Greedy Breakdown with Edge Cases | Top 150 Series
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9 minutes 18 seconds17. Roman to Integer – LeetCode 13 🔢 Smart Mapping + Greedy Logic | Top Interview 150
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31 minutes 22 seconds16. Trapping Rain Water – LeetCode 42 🌧️ Two Pointers vs Prefix–Suffix | Visual & Interview-Ready!
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36 minutes 39 seconds15. Candy – LeetCode 135 🍬 Two-Pass vs Peak–Valley Greedy | Elegant & Interview-Ready!
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21 minutes 29 seconds14. Gas Station – LeetCode 134 ⛽ Brute Force vs Greedy Pivot | Clean, Visual, Interview-Ready!
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31 minutes 55 seconds13. Product of Array Except Self – LeetCode 238 ⚡ Prefix–Suffix, Zero Handling & O(1) Space Strategy
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9 minutes 29 seconds12. Insert-Delete-GetRandom O(1) – LeetCode 380 ⚡ Vector + HashMap Trick | Clean & Optimal!
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16 minutes 58 seconds11. H-Index – LeetCode 274 📊 Brute Force vs Optimized Counting Approach | Clean & Intuitive!
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14 minutes 4 seconds10.2 Jump Game II – LeetCode 45 ⚡ Ultimate Greedy O(n) Approach | Minimum Jumps in One Pass (Part 2)
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23 minutes 9 seconds10.1. Jump Game II – LeetCode 45 🚀 Backtracking, Memoization & DP | Minimum Jumps Explained | part 1
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14 minutes 55 seconds09. Jump Game – LeetCode 55 🚀 Backtracking vs Greedy | Can You Reach the End?
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Shorts
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Newest first.
3 minutes 26 secondsTurn Your Android Phone Into a Graphics Tablet (Free App)
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46 minutes 11 secondsPrime Number Queries Explained: Sieve of Eratosthenes & Segmented Sieve | Part 2
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20 minutes 26 seconds5 Ways to Check if a Number is Prime (From Brute Force to Super Fast) | Part 1
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- 8 minutes 16 seconds
19. Length of Last Word – LeetCode 58 ✍️ 2 Clean Approaches | Forward Scan vs Backward Scan
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- 11 minutes 21 seconds
18. Integer to Roman – LeetCode 12 🏛️ Greedy Breakdown with Edge Cases | Top 150 Series
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- 9 minutes 18 seconds
17. Roman to Integer – LeetCode 13 🔢 Smart Mapping + Greedy Logic | Top Interview 150
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- 31 minutes 22 seconds
16. Trapping Rain Water – LeetCode 42 🌧️ Two Pointers vs Prefix–Suffix | Visual & Interview-Ready!
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- 36 minutes 39 seconds
15. Candy – LeetCode 135 🍬 Two-Pass vs Peak–Valley Greedy | Elegant & Interview-Ready!
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- 21 minutes 29 seconds
14. Gas Station – LeetCode 134 ⛽ Brute Force vs Greedy Pivot | Clean, Visual, Interview-Ready!
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- 31 minutes 55 seconds
13. Product of Array Except Self – LeetCode 238 ⚡ Prefix–Suffix, Zero Handling & O(1) Space Strategy
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- 9 minutes 29 seconds
12. Insert-Delete-GetRandom O(1) – LeetCode 380 ⚡ Vector + HashMap Trick | Clean & Optimal!
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- 16 minutes 58 seconds
11. H-Index – LeetCode 274 📊 Brute Force vs Optimized Counting Approach | Clean & Intuitive!
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- 14 minutes 4 seconds
10.2 Jump Game II – LeetCode 45 ⚡ Ultimate Greedy O(n) Approach | Minimum Jumps in One Pass (Part 2)
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- 23 minutes 9 seconds
10.1. Jump Game II – LeetCode 45 🚀 Backtracking, Memoization & DP | Minimum Jumps Explained | part 1
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- 14 minutes 55 seconds
09. Jump Game – LeetCode 55 🚀 Backtracking vs Greedy | Can You Reach the End?
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5 minutes 45 seconds08. Best Time to Buy and Sell Stock II – LeetCode 122 📈 Greedy Multi-Trade Strategy
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14 minutes 8 seconds07. Best Time to Buy and Sell Stock – LeetCode 121 📈 Optimal Single-Pass Strategy
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14 minutes 36 seconds06. Rotate Array - Leetcode 189 🔁 3 Approaches | In-Place Reverse, Clone Trick, and Brute Rotation!
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12 minutes 5 seconds05. Majority Element - Leetcode 169 🔥 3 Optimal Approaches | Boyer–Moore Explained in 60 Seconds
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24 minutes 4 seconds04. Remove Duplicates II - Leetcode 80 🔥 2 Ultra-Clean Approaches | Ace Two-Pointer Logic Fast
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1 hour 40 minutes 42 secondsBuild Any Tree from Level Order Input & Export as PNG | Data Structure Visualizer Tutorial
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13 minutes 59 seconds03. Remove Duplicates from Sorted Array - Leetcode 26 | 2 Methods Explained | Leetcode 150
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11 minutes 18 seconds01. Remove Element – LeetCode | 2 Powerful Approaches Explained 🔥 (Two Pointers + Overwrite)
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11 minutes 51 seconds02. Merge Sorted Array - LeetCode 88 | Best In-Place Merge Explained Step-by-Step
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