Ghost Codes

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Master DSA & LeetCode for FAANG Interviews — Blind 75, Graph, DP, Trees & Coding Interview Prep. Let’s grow step by step, every day. Reach out: yannigoel@gma...

Latest Videos

Brute Force → Sliding Window in One Video Minimum Window Substring LeetCode 76 Blind 75 #53

Longest Repeating Character Replacement 🔥 Sliding Window Explained Easy LeetCode 424

Valid Anagram Explained Easily 🔥 Blind 75 LeetCode #54 Sorting + Optimal Approach

LeetCode 3 Explained Simply 🚀 Longest Substring Without Repeating Characters

LeetCode Word Search Explained So Simply, You'll Never Forget It (Blind 75 #50)

Rotate Image In-Place — No Extra Space! LeetCode 48 Blind 75 #49

I Solved Spiral Matrix Without Getting Lost 🌀 LeetCode 54 Blind 75 #48

Set Matrix Zeroes Finally EXPLAINED Simply LeetCode 73 Blind 75 #47

Reorder Linked List in 10 Minutes 🔥 LeetCode Blind 75 #46 Explained (Step-by-Step)

Remove Nth Node from End (LeetCode) 2 Pointer Trick Explained 🔥 Blind 75 #45

Merge K Sorted Lists (LeetCode) Best Approach Explained 🚀 Blind 75 #44

Stop Struggling with Linked Lists! Merge Two Sorted Lists (Blind 75 #43)

How to Detect a Cycle in a Linked List in O(1) Space LeetCode 141 Blind 75 #42 Must Know Trick

How to Reverse a Linked List in O(1) Space LeetCode 206 Blind 75 #41 Most Asked Interview Ques

Meeting Rooms II Explained Simply — Intervals + Heap Blind 75 #40 Coding Interview Must Know

Meeting Rooms I — Solved Simply Blind 75 #39 LeetCode Sorting Trick Most Beginners Miss

Find Repeating & Missing Number using Frequency Array LeetCode 2028 Blind 75 #38

Why Merge Intervals Logic FAILS Here 🤔 Non-overlapping Intervals (Blind 75 #37)

Merge Intervals in less than 9 Minutes Blind 75 LeetCode #36 Explained Simply

Insert Interval The Cleanest Way to Solve It Blind 75 #35

Complete Components Made EASY ✅ Blind 75 #34 Crack Graph Problems in Interviews📝

Is This Graph a Tree 🤔 Crack It in 8 Minutes Blind 75 DSA #33

Alien Dictionary Explained Like Never Before 👽 Topological Sort Blind 75 #32

Longest Consecutive Sequence from SCRATCH O(n log n) → O(n) Leetcode 128 Blind 75 #31

I Solved Number of Islands under 10 Minutes — Here's My Exact Thought Process Leetcode 200

Why Most People Solve This Wrong Pacific Atlantic Water Flow LeetCode 417

Blind 75 #28 Course Schedule Explained 🚀 (DFS + Cycle Detection)

Most Asked Graph Problem 😳 Clone Graph (DFS + HashMap) Interview Ready

Most Asked Interview Problem 🚀 Jump Game (3 Approaches You MUST Know!)

Master Unique Paths in 7 Minutes ⚡ Recursion + Memoization (Blind 75 #25)