Xavier Elon

LeetCode 221 | Maximal Square | Dynamic Programming Solution Explained (Java)

LeetCode 77 | Combinations | Backtracking Algorithm Explained (Java + Debugging)

HackerRank Arrays | Left Rotation | Solution Explained (Java + Whiteboard)

LeetCode 221 | Maximal Square | Dynamic Programming Solution Explained (Java)

LeetCode 19 | Remove Nth Node from End of List | Algorithm Explained (Java)w

HackerRank | Java Dequeue Solution Explained

HackerRank | Array Manipulation | Solution Explained (Java + Whiteboard)

HackerRank | Sparse Arrays | Solution Explained (Java)

Remove Duplicates from Sorted Array | LeetCode Interview Solution Explained (Java + Whiteboard)

LeetCode 867 | Transpose Matrix | Solution Explained (Java)

LeetCode 680 | Valid Palindrome II | Greedy Algorithm Explained (Java)

LeetCode 238 | Product of Array Except Self | Solution Explained (Java + Whiteboard)

LeetCode 567 | Permutation in String | Solution Explained (Whiteboard + Algorithm in Java)

HackerRank | Equalize the Array | Solution Explained (Java + Whiteboard)

HackerRank | Minimum Swaps 2 | Solution Explained (Java + Whiteboard)

LeetCode 589 | N-Ary Tree Pre-Order Traversal | Iterative + Recursive Solution (Java + Whiteboard)

HackerRank | Binary Trees | How to Find Height of Binary Tree | Solution Explained (Java)

LeetCode 143 | Reorder List | Solution Explained (Whiteboard + Algorithm in Java)

How I Passed My AWS Cloud Practitioner Exam in 10 Days (as a non-millionaire)

HackerRank | Repeated String | Solution Explained (Java)

LeetCode 263 | Ugly Number | Solution Explained (Java)

LeetCode 110 | Balanced Binary Tree | Solution Explained (Java + Whiteboard)

LeetCode 24 | Swap Nodes in Pairs | Solution Explained (Java + Whiteboard)

LeetCode 1512 | Number of Good Pairs | Solution Explained (Java + Whiteboard)

LeetCode 116 | Path Sum II | Solution Explained (White + Algorithm in Java)

HackerRank | Java ArrayList | Solution Explained

HackerRank ArrayList Solution Explained - Java (Updated Video in Description)

LeetCode 82 | Remove Duplicates from Sorted Linked List II | Solution Explained (Java)

LeetCode 280 | Wiggle Sort | Solution Explained (Java + Whiteboard)

HackerRank Stack Solution Explained - Java

LeetCode 206 | Reverse Linked List | Solution Explained (Java + Whiteboard)

HackerRank | Max Array Sum | Solution Explained (Java + Whiteboard )

LeetCode 232 | Implement Queue Using Stacks | Solution Explained (Java + Whiteboard)

LeetCode 560 | Subarray Sum Equals K | Solution Explained (Java + Whiteboard)

LeetCode 116 | Populating Next Right Pointers in Each Node

LeetCode 785 | Is Graph Bipartite? | Solution Explained (Whiteboard + Algorithm in Java)

LeetCode 27 | Remove Element | Two Pointers Solution Explained (Java + Whiteboard)

LeetCode 83 | Remove Duplicates from Sorted Linked List (Java + Whiteboard)

LeetCode 1124 | Longest Well Performing Interval | Algorithm Explained (Java + Whiteboard)

LeetCode 965 | Univalued Binary Tree | Solution Explained (Java)

LeetCode 350 | Intersection of Two Arrays II | Solution Explained (Java + Whiteboard)

LeetCode 3 | Longest Substring without Repeating Characters | Algorithm Explained (Java)

LeetCode 54 | Spiral Matrix | Algorithm Explained (Java)

LeetCode 349 | Intersection of Two Arrays | Solution Explained (Java)

LeetCode 112 | Path Sum | Solution Explained | Java + Whiteboard

LeetCode 268 | Missing Number | Solution Explained (Java + Whiteboard)

LeetCode 713 | Subarray Product Less Than K | Solution Explained (Java + Whiteboard)

LeetCode 366 | Find Leaves of Binary Tree | Solution Explained (Java + Whiteboard)

LeetCode 1 | Two Sum | All Solutions Explained | Java + Whiteboard

LeetCode 16 | 3Sum Closest | Solution Explained (Java + Whiteboard)

LeetCode 136 | Single Number | Solution Explained (Java + Whiteboard)