CodingNinja
@CodingNinjaAZ
Prepare for the next coming technical interviews with my YouTube channel! I have more than 400 videos and You can get solution codes for free.
If you want to watch medium or hard videos ad-free, please join the membership. If you skip Starbucks tomorrow, you can use that money to pay for a whole year of membership. USD $0.61 per month as of Aug 26, 2025 Membership Link youtube.com/channel/UC9RMN…
Two Sum IV - Input is a BST - leetcode 653 | Stop Overthinking, Try This youtu.be/rXD5Yt43Oro
youtube.com
YouTube
Two Sum IV - Input is a BST - leetcode 653 | Preorder, Inorder and...
Binary Tree Postorder Traversal youtu.be/uvWHVJOHz9w
youtube.com
YouTube
Binary Tree Postorder Traversal Made Super Easy! - leetcode 145
Next Greater Element I - LeetCode 496 | Stop Overthinking, Try This youtu.be/W44bZsslWcg
youtube.com
YouTube
Next Greater Element I - LeetCode 496 | Stop Overthinking, Try This
I decided to start a membership program. youtu.be/tcHc6zLG_ko
youtube.com
YouTube
Join a Membership for Just 90 Yen!? (Only USD $0.61! as of Aug 14th,...
Single Element in a Sorted Array - LeetCode 540 youtu.be/Gf6TbacMIxk
youtube.com
YouTube
Single Element in a Sorted Array - LeetCode 540 | Stop Overthinking,...
Sqrt(x) - LeetCode 69: Master the Square Root Problem in Minutes! youtu.be/NNRbTYhgBjA
youtube.com
YouTube
Sqrt(x) - LeetCode 69: Master the Square Root Problem in Minutes!
Top 7 traffic sources for my channel — and guess what’s on the list? ChatGPT 😂 People say “ChatGPT solution” on my posts in LeetCode — but I tell them: “Check my LeetCode history — I’ve been solving it this way before ChatGPT existed.” I will say: “ChatGPT learned from me.” 😎
【English】Edit Distance - LeetCode 72: Insert, Delete, or Replace? youtu.be/CqtcLBaD38k
youtube.com
YouTube
Edit Distance - LeetCode 72: Insert, Delete, or Replace?
I updated a youtube post for reaching 20,000 subscribers. youtube.com/channel/UC9RMN…
【English】127. Word Ladder youtu.be/pGTV4BRsBxA
youtube.com
YouTube
Word Ladder - LeetCode 127: This One Trick Makes It Lightning Fast ⚡
In today's video(Single Number LeetCode 136), I talk about four key properties of XOR that you should know. It's something you definitely want to understand for technical interviews, so make sure to watch it!
【English】Single Number LeetCode 136 | No HashMap Needed! Bitwise Magic youtu.be/nMC78grcvGw
youtube.com
YouTube
Single Number LeetCode 136 | No HashMap Needed! Bitwise Magic
【English】String to Integer (atoi) LeetCode 8 youtu.be/X8fROypQSog
youtube.com
YouTube
String to Integer (atoi) LeetCode 8 | Easy & Clear Explanation for...
【English】Reverse Nodes in k-Group LeetCode 25 | Easy & Clear Explanation for Beginners youtu.be/q6FrF7TLMJM
youtube.com
YouTube
Reverse Nodes in k-Group LeetCode 25 | Easy & Clear Explanation for...
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