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Shaan Yadav — Thu, 10 Sep 2026 05:16:21 +0000

Shaan Yadav

Sep 10

Count Nodes Equal to Average of Subtree | LEETCODE 2265 | Solve In Seconds

#productivity #ai #webdev #programming

2 min read

Count Nodes Equal to Average of Subtree | LEETCODE 2265 | Solve In Seconds

Shaan Yadav — Thu, 10 Sep 2026 05:15:51 +0000

This video breaks down LeetCode 2265 — Count Nodes Equal to Average of Subtree — a medium binary tree problem where post-order DFS returns (sum, count) pairs to check the average condition at every node in linear time.

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

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Count Nodes Equal to Average of Subtree is a medium binary tree problem asked in real interviews — DFS traversal computing subtree sum and count, checking the average condition at every node.

LeetCode Question: https://leetcode.com/problems/count-nodes-equal-to-average-of-subtree/ Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_2265_Count_Nodes_Equal_to_Average_of_Subtree_All_Languages.md

Why this approach beats the others
Post-order DFS returns (sum, count) — no competitor explains the two-value return pattern this clearly. We teach why children must be processed before parents.
O(n) vs O(n²) explained — brute force recalculates subtrees repeatedly. The optimal approach visits each node exactly once. We show both approaches side by side.
The average condition — node value equals floor(sum / count). We walk through exactly when this condition triggers and why integer division matters.
Pattern recognition — this same post-order aggregate pattern solves Maximum Average Subtree, Diameter of Binary Tree, and Binary Tree Maximum Path Sum.
Four-language code (Java/Python/C++/C) — no competitor provides all four with the same clean logic.
How to solve Count Nodes Equal to Average of Subtree (Step by Step)
Define a DFS helper that returns a pair: (subtree sum, subtree count).
Base case: null node returns (0, 0).
At each node, recursively get left and right pairs.
Compute sum = node.val + left.sum + right.sum, count = 1 + left.count + right.count.
If sum / count == node.val, increment the answer.
Return (sum, count) to the parent.
Notes for US interview prep
Title, description, tags, chapters = American English spelling.
Upload accurate English .srt captions (do NOT rely on auto-captions).
Schedule in EST window: Tue/Wed 2-4 PM EST (1:30 AM IST next day) via YouTube Schedule.
Long-form hashtags trimmed to 3 (LeetCode2265, CountNodesAverageSubtree, BinaryTreeDFS).
Create playlists: “LeetCode Daily”, “LeetCode Medium”, “Binary Tree DFS Patterns”.
Channel About section + keywords = US terms (LeetCode, coding interview, binary tree, DFS).
📺 Watch the full walkthrough on YouTube: https://youtu.be/cvpBMPbbRQc?si=9UmrodgirbT7IdqT

Watch the full Count Nodes Equal to Average of Subtree | LEETCODE 2265 | Solve In Seconds walkthrough on YouTube

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Construct Uniform Parity Array II | LEETCODE 3876 | Solve In Seconds |

Shaan Yadav — Thu, 03 Sep 2026 17:10:22 +0000

Construct Uniform Parity Array II | LEETCODE 3876 | Solve In Seconds |

This video breaks down Leetcode 3876 — Construct Uniform Parity Array II — the harder Part 2 where the positive-difference constraint creates a bottleneck at the minimum odd number. We explain why the smallest odd number determines the answer: if any even number is smaller than it, you cannot make everything odd. The solution runs in O(n) time with O(1) space. We connect this to Part 1 (3875) and teach the parity math that separates medium from easy problems.

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Construct Uniform Parity Array II is the harder Part 2 of Leetcode 3876 where the minimum odd number bottleneck determines whether you can build a uniform parity array — and here is exactly how it works.

LeetCode Question: https://leetcode.com/problems/construct-uniform-parity-array-ii/
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_3876_Construct_Uniform_Parity_Array_II_All_Languages.md

Why this approach beats the others

Minimum-odd bottleneck explanation — no competitor explains WHY the smallest odd number is the bottleneck. We teach the deep insight.
Part 1 connection — we position this as the continuation from 3875, driving views to both videos.
"WHY BEHIND EVERYTHING ?" hook — we explain the reasoning, not just the code. This is what interviews test.
Clean SEO title with "Solve In Seconds" — no competitor has this hook for 3876.
Four-language code (Java/Python/C++/C) — no competitor provides all four.

Notes for US interview prep

Title, description, tags, chapters = American English spelling.
Upload accurate English .srt captions (do NOT rely on auto-captions). cam.srt has word-level timestamps — clean into proper .srt format.
Schedule in EST window: Tue/Wed 2-4 PM EST (1:30 AM IST next day) via YouTube Schedule.
Long-form hashtags trimmed to 3 (Leetcode3876, ConstructUniformParityArray, ParityArray).
Create playlists: "LeetCode Daily", "LeetCode Medium", "Brain Teasers LeetCode".
Channel About section + keywords = US terms (LeetCode, coding interview, parity array, brain teaser).

📺 Watch the full walkthrough on YouTube:

Watch the full Construct Uniform Parity Array II | LEETCODE 3876 | Solve In Seconds | walkthrough on YouTube

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Construct Uniform Parity Array I | LEETCODE 3875 | Solve In Seconds |

Shaan Yadav — Wed, 02 Sep 2026 05:20:25 +0000

Construct Uniform Parity Array I | LEETCODE 3875 | Solve In Seconds |

This video breaks down Leetcode 3875 — Construct Uniform Parity Array I — a brain teaser where the entire solution is two words: return true. We explain the parity math behind WHY it always works: if all elements share the same parity, copy them; if mixed, subtract odd from even to make everything odd. Every case returns true. The video teaches you to think before coding, which is the real skill interviews test. We also connect this to Part 2, which adds real construction constraints.

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

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Construct Uniform Parity Array I is a brain teaser Leetcode 3875 problem where the solution is just two words — return true — and here is exactly why that works every single time.

LeetCode Question: https://leetcode.com/problems/construct-uniform-parity-array-i/
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_3875_Construct_Uniform_Parity_Array_I_All_Languages.md

Why this approach beats the others

"2 Word Solution Only" hook — no competitor leads with the brain teaser angle. This drives massive curiosity clicks.
Parity MATH explanation — we explain WHY it always returns true, not just THAT it returns true. Competitors just say "return true" without the why.
Part 2 connection — we position this as the foundation for the harder problem, giving viewers a reason to watch both.
"Think Before You Code" lesson — we teach the meta-skill of analyzing before coding, which is what interviews actually test.
Clean SEO title with "Solve In Seconds" — no competitor has this hook for 3875.

Notes for US interview prep

Title, description, tags, chapters = American English spelling.
Upload accurate English .srt captions (do NOT rely on auto-captions). The current cam.srt is a word-level transcript — clean it into proper .srt format with correct timing before upload.
Schedule in EST window: Tue/Wed 2-4 PM EST (1:30 AM IST next day) via YouTube Schedule.
Long-form hashtags trimmed to 3 (Leetcode3875, ConstructUniformParityArray, BrainTeaser).
Create playlists: "LeetCode Daily", "LeetCode Easy", "Brain Teasers LeetCode".
Channel About section + keywords = US terms (LeetCode, coding interview, brain teaser).

📺 Watch the full walkthrough on YouTube:

Watch the full Construct Uniform Parity Array I | LEETCODE 3875 | Solve In Seconds | walkthrough on YouTube

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Minimum Moves to Clean the Classroom | LEETCODE 3568 | Solve In Seconds | Bloomberg Interview

Shaan Yadav — Tue, 01 Sep 2026 06:47:05 +0000

Minimum Moves to Clean the Classroom | LEETCODE 3568 | Solve In Seconds | Bloomberg Interview

This video walks through LeetCode 3568: Minimum Moves to Clean the Classroom, a Bloomberg interview problem. We explain the BFS + Bitmask DP approach for grid traversal with energy constraints and litter collection. The solution tracks state as (row, col, energy, mask) and uses BFS to find the minimum moves. Reset areas restore energy, obstacles block movement, and the bitmask tracks which litter cells have been collected. Full Java code walkthrough included.

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Minimum Moves to Clean the Classroom LeetCode 3568 solution — the cleanest BFS and Bitmask DP walkthrough for grid traversal with energy constraints and litter collection. This Bloomberg interview problem tests your ability to manage state in a grid while collecting all litter items before energy runs out.

LeetCode Question: https://leetcode.com/problems/minimum-moves-to-clean-the-classroom/
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_3568_Minimum_Moves_to_Clean_the_Classroom_All_Languages.md

Why this approach beats the others

Bloomberg branding (verified asking company) — most competitors do not mention the company.
"Solve In Seconds" hook — fast-paced, no fluff, no classroom-style rambling.
BFS + Bitmask DP explained with visual state transitions — not just code dumps.
Energy management + R cell strategy clearly explained — the trickiest part most videos skip.
Professional thumbnail with stored photo, LeetCode logo, Bloomberg logo, and "INTERVIEW APPROACH" text.

Notes for US interview prep

Schedule for US peak: Tuesday or Wednesday 2:00 PM EST (12:30 AM IST next day) via YouTube Schedule.
Upload accurate English .srt captions (not auto-generated) for clean indexing.
Long-form hashtags trimmed to 1-2 (per 2026 data: 17% fewer views with hashtags on long-form).
Company playlists: "Bloomberg LeetCode Interview", "Amazon LeetCode", "Google LeetCode".
Community engagement: r/leetcode, Blind, LinkedIn, Dev.to.

📺 Watch the full walkthrough on YouTube:

Watch the full Minimum Moves to Clean the Classroom | LEETCODE 3568 | Solve In Seconds | Bloomberg Interview walkthrough on YouTube

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Min Max Nodes Between Critical Points | LEETCODE 2058 | Solve In Seconds | Amazon Interview |

Shaan Yadav — Mon, 31 Aug 2026 06:00:26 +0000

Min Max Nodes Between Critical Points | LEETCODE 2058 | Solve In Seconds | Amazon Interview |

This video covers LeetCode 2058 — Find the Minimum and Maximum Number of Nodes Between Critical Points. A medium-difficulty linked list problem asked at Amazon, Google, Meta, and Microsoft. The solution uses a three-node sliding window (previous, current, next) to detect local maxima and local minima in a single O(n) pass. The optimal O(1) space approach tracks only four variables: firstCriticalIndex, previousCriticalIndex, minDistance, and currentIndex. An alternative ArrayList approach stores all critical indices and scans for min/max distance. Edge cases covered: fewer than two critical points returns [-1, -1], strictly increasing/decreasing lists, and tied values.

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Find the Minimum and Maximum Number of Nodes Between Critical Points is a medium linked list problem asked at Amazon, Google, Meta, and Microsoft — the easiest two-pointer explanation with both O(1) and O(n) space solutions explained in seconds.

LeetCode Question: https://leetcode.com/problems/find-the-minimum-and-maximum-number-of-nodes-between-critical-points/
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_2058_Find_the_Minimum_and_Maximum_Number_of_Nodes_Between_Critical_Points_All_Languages.md

Why this approach beats the others

Company angle: "Amazon Most Asked Interview" — no competitor owns this for LC 2058.
Two approaches: O(1) space optimal + ArrayList walkthrough — competitors show only one.
"Solve In Seconds" promise — unique hook for this specific problem.
O(n) to O(1) Space Complexity text on thumbnail — the exact upgrade interviewers want to see.
FAANG company logos on thumbnail (Amazon, Google, Meta, Microsoft) — instant credibility.
Long-tail keyword coverage: "three-node window", "local maximum minimum linked list", "critical points O(1) space" — competitors miss these.

Notes for US interview prep

Schedule in EST window: Tue/Wed 2-4 PM EST or Sun 10 AM EST
Upload accurate English .srt captions (cam.srt grounded)
Company playlists: Amazon LeetCode, Google LeetCode, Meta LeetCode, Microsoft LeetCode
Long-form hashtags trimmed to 3-5
English metadata (American spelling: behavior, optimize, color)

📺 Watch the full walkthrough on YouTube:

Watch the full Min Max Nodes Between Critical Points | LEETCODE 2058 | Solve In Seconds | Amazon Interview | walkthrough on YouTube

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Removing Minimum and Maximum From Array | LEETCODE 2091 | Solve In Seconds | Amazon Most Asked

Shaan Yadav — Mon, 31 Aug 2026 05:22:11 +0000

Removing Minimum and Maximum From Array | LEETCODE 2091 | Solve In Seconds | Amazon Most Asked

This video covers LeetCode 2091 — Removing Minimum and Maximum From Array. A medium-difficulty greedy array problem asked at Amazon, Google, Meta, and Microsoft. The solution finds the indices of the minimum and maximum elements in a single O(n) pass, then compares three deletion strategies: delete from front only, delete from back only, or delete one from each end (the "pincer" move). The answer is the minimum of all three. Optimal O(1) space using only four variables. Edge cases covered: single element (return 1), adjacent min/max at one end (return 2), min/max at opposite ends (return 2).

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Removing Minimum and Maximum From Array (LeetCode 2091) — the easiest greedy explanation with a clean O(n) walkthrough and full Java, Python, C++ and C code.

LeetCode Question: https://leetcode.com/problems/removing-minimum-and-maximum-from-array/
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_2091_Removing_Minimum_and_Maximum_From_Array_All_Languages.md

Why this approach beats the others

Company angle: "Amazon Most Asked Interview" — no competitor owns this for LC 2091.
Three strategies compared: front-only, back-only, pincer — competitors show only one.
"Solve In Seconds" promise — unique hook for this specific problem.
"3 STRATEGIES | O(n) TIME" text on thumbnail — the exact upgrade interviewers want to see.
FAANG company logos on thumbnail (Amazon, Google, Meta, Microsoft) — instant credibility.
Long-tail keyword coverage: "greedy array", "three deletion strategies", "front back removal" — competitors miss these.

Notes for US interview prep

Schedule in EST window: Tue/Wed 2-4 PM EST or Sun 10 AM EST
Upload accurate English .srt captions (cam.srt grounded)
Company playlists: Amazon LeetCode, Google LeetCode, Meta LeetCode, Microsoft LeetCode
Long-form hashtags trimmed to 3-5
English metadata (American spelling: behavior, optimize, color)

📺 Watch the full walkthrough on YouTube:

Watch the full Removing Minimum and Maximum From Array | LEETCODE 2091 | Solve In Seconds | Amazon Most Asked walkthrough on YouTube

🚀 Cracking Amazon / Google interviews? Get every new LeetCode solution the moment it drops. Join 2,000+ coders who never miss a walkthrough:

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Removing Minimum and Maximum From Array | LEETCODE 2091 | Solve In Seconds | Amazon Most Asked

Shaan Yadav — Sun, 30 Aug 2026 03:23:46 +0000

Removing Minimum and Maximum From Array | LEETCODE 2091 | Solve In Seconds | Amazon Most Asked

This video solves LeetCode 2091 Removing Minimum and Maximum From Array with a greedy O(n) approach. It finds the min and max indices in one pass, then compares three deletion patterns — front only, back only, and both ends — returning the minimum count. The walkthrough covers the worked example, edge cases (n=1, adjacent indices, extremes at the ends), complexity O(n)/O(1), and the full Java, Python, C++ and C code, framed for Amazon, Google and Meta interviews.

🧠 Want the intuition, not just the code? Join 2,000+ coders getting daily LeetCode breakdowns (Telegram gets them first):

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Removing Minimum and Maximum From Array is a LeetCode medium problem — the easiest greedy O(n) way to delete both extremes with the fewest front-or-back removals, explained with a clear visual walkthrough.

Why this approach beats the others

Exact primary keyword "Removing Minimum and Maximum From Array" leads the title and the description snippet, while blogs/video competitors bury it.
O(n) greedy explained visually (three deletion cases) beats the common O(n log n) sorting explanations.
Black cinematic, face-forward thumbnail with LeetCode + Amazon/Google logos and two distinct taglines ("CRACK INTERVIEW", "JUST WATCH IT") out-clicks plain-code thumbnails.
Full Java/Python/C++/C code in one GitHub file covers every language searchers type.
Chapters, 6 FAQ, and US-EST scheduling maximize YouTube + Google + AI-search indexing.

Notes for US interview prep

Metadata in American English spelling (behavior, color, optimize, favorite).
Upload accurate English .srt captions (the recording cam.srt) — do NOT rely on auto-captions; this unlocks Google video carousels and AI-search citations.
Schedule publish Tue/Wed 2-4 PM EST (Sun 10 AM EST also strong) via YouTube Schedule; 3 PM EST = 1:30 AM IST next day.
Build playlists: "Amazon LeetCode Interview", "Google LeetCode", "Meta LeetCode" for session autoplay.
Long-form hashtags kept to 3 (trim spam); push Shorts clipping the Solve-in-Seconds hook (vertical 9:16, captions) Fri 4-7 PM EST.
Confirm US% rising in YouTube Studio -> Audience -> Geography.

📺 Watch the full walkthrough on YouTube:

Watch the full Removing Minimum and Maximum From Array | LEETCODE 2091 | Solve In Seconds | Amazon Most Asked walkthrough on YouTube

🧠 Want the intuition, not just the code? Join 2,000+ coders getting daily LeetCode breakdowns (Telegram gets them first):

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Make Lexicographically Smallest Array by Swapping Elements | LEETCODE 2948 | Solve In Seconds |

Shaan Yadav — Sat, 29 Aug 2026 04:43:26 +0000

Make Lexicographically Smallest Array by Swapping Elements | LEETCODE 2948 | Solve In Seconds |

LeetCode 2948 — Make Lexicographically Smallest Array by Swapping Elements. You may swap two elements only if their value gap is ≤ limit, so values form limit-groups (connected components). Sort value-index pairs, group by the limit, then place each group's smallest values at its smallest original indices. Result: lexicographically smallest array in O(n log n) time, O(n) space. Asked at Amazon, Google, Atlassian, Uber, IBM, PhonePe.

🧠 Want the intuition, not just the code? Join 2,000+ coders getting daily LeetCode breakdowns (Telegram gets them first):

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Make Lexicographically Smallest Array by Swapping Elements (LeetCode 2948) — the easiest limit-group swap explanation with a clean O(n log n) walkthrough and full Java, Python, C++ and C code.

LeetCode Question: https://leetcode.com/problems/make-lexicographically-smallest-array-by-swapping-elements/
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_2948_Make_Lexicographically_Smallest_Array_by_Swapping_Elements_All_Languages.md

Why this approach beats the others

Exact long-tail title + "Solve In Seconds" + company interview angle competitors lack.
All four languages (Java/Python/C++/C) in ONE GitHub file — rivals show one language.
Face-forward black cinematic thumbnail with LeetCode + Amazon logos and two distinct taglines ("CRACK INTERVIEW", "JUST WATCH IT") for max CTR.
Chapter-level keyword extraction + FAQ + clean transcript feed YouTube, Google and AI search (GEO) citations.

Notes for US interview prep

Metadata in American English spelling (behavior, color, optimize, favorite) — applied in title/description/tags.
Captions: upload the accurate English .srt already recorded at /Users/shaanyadav/MyStorage/youtube/Recoding/cam.srt to YouTube (do NOT rely on auto-captions; fixes technical terms like "lexicographically").
Schedule in EST: long-form Tue/Wed 2-4 PM EST (publish 1-2h before). IST = EST + 10h30m, so 3 PM EST = 1:30 AM IST next day — use YouTube Schedule.
Playlists: create "Amazon LeetCode Interview", "Google LeetCode", "LeetCode Daily" and add this video.
Long-form hashtags trimmed to 2 (#LeetCode #AmazonInterview) per 2026 data (hashtags can cut long-form views).
AI/GEO: chapters act as citable H2 chunks; clean transcript + direct-answer description help ChatGPT/Gemini/Perplexity cite the video.

📺 Watch the full walkthrough on YouTube:

Watch the full Make Lexicographically Smallest Array by Swapping Elements | LEETCODE 2948 | Solve In Seconds | walkthrough on YouTube

🧠 Want the intuition, not just the code? Join 2,000+ coders getting daily LeetCode breakdowns (Telegram gets them first):

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Lexicographically Smallest Palindromic Permutation Greater Than Target | LEETCODE 3734 | Solve In Seconds

Shaan Yadav — Fri, 28 Aug 2026 04:17:31 +0000

Lexicographically Smallest Palindromic Permutation Greater Than Target | LEETCODE 3734 | Solve In Seconds

The video opens with the LeetCode 3734 problem statement and two examples, then explains frequency counting and the at-most-one-odd rule. It builds the left half with greedy choices constrained by the target prefix and backtracking, mirrors it into the final palindrome, and proves the O(26*n) time / O(26) space complexity. The flash texts "YOU WILL DO IT", "HARD MADE EASIEST" and "JUST WATCH IT" reinforce confidence.

🧠 Want the intuition, not just the code? Join 2,000+ coders getting daily LeetCode breakdowns (Telegram gets them first):

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Lexicographically Smallest Palindromic Permutation Greater Than Target (LeetCode 3734, Hard) is explained the easiest way — a clear greedy plus backtracking walkthrough that builds the smallest palindrome permutation strictly greater than the target.

LeetCode Question: https://leetcode.com/problems/lexicographically-smallest-palindromic-permutation-greater-than-target/
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_3734_Lexicographically_Smallest_Palindromic_Permutation_Greater_Than_Target_All_Languages.md

Why this approach beats the others

Exact long-tail keyword in title, description opening, FAQ, chapters, tags and hashtags — future "optimized" videos cannot outrank.
Real GitHub code (4 languages) with a permanent blob link — competitors only paste screenshots.
21-section depth: chapters, FAQ, US SEO, scheduling, AI/GEO-ready transcript structure.
Cinematic black thumbnail with LeetCode logo + flash texts and a real bearded face — highest CTR.

Notes for US interview prep

Metadata in American English (behavior/color/optimize).
Upload accurate English .srt captions (NOT auto) so YouTube + Google + AI engines index the palindrome permutation logic.
Schedule long-form Tue/Wed 2-4 PM EST (Shorts Fri 4-7 PM EST) via YouTube Schedule.
Build playlists: Amazon LeetCode Interview, Google LeetCode, Meta LeetCode, Microsoft LeetCode (even though no company is verified for 3734, these catch sibling searches).
Long-form hashtags trimmed to 3 (US RPM focus).

📺 Watch the full walkthrough on YouTube:

Watch the full Lexicographically Smallest Palindromic Permutation Greater Than Target | LEETCODE 3734 | Solve In Seconds walkthrough on YouTube

🧠 Want the intuition, not just the code? Join 2,000+ coders getting daily LeetCode breakdowns (Telegram gets them first):

📢 Telegram: https://t.me/opentech_shaanlabs
💬 WhatsApp: https://chat.whatsapp.com/CvlyO3ZBBoTBiPLDXpEJME?mode=gi_t

Lexicographically Smallest Permutation Greater Than Target | LEETCODE 3720 | Solve In Seconds |

Shaan Yadav — Thu, 27 Aug 2026 07:14:10 +0000

Lexicographically Smallest Permutation Greater Than Target | LEETCODE 3720 | Solve In Seconds |

This video solves LeetCode 3720 - Lexicographically Smallest Permutation Greater Than Target using a greedy frequency-count method in O(26 * n) time. It shows why brute force fails, walks three worked examples, and explains the largest-remainder check that makes the construction correct for Amazon and Google interviews.

🔔 Love FAANG-style LeetCode walkthroughs? Don't solve alone — join 2,000+ coders getting daily breakdowns (Telegram is fastest):

📢 Telegram: https://t.me/opentech_shaanlabs
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Lexicographically Smallest Permutation Greater Than Target is a Medium LeetCode 3720 greedy problem asked at Amazon and Google - the cleanest O(26 * n) explanation with a visual walkthrough.

LeetCode Question: https://leetcode.com/problems/lexicographically-smallest-permutation-greater-than-target/description
Solution (Java / Python / C++ / C): https://github.com/Shaanworkspace/YOUTUBE-DRIVE/blob/main/Leetcode_Daily/LC_3720_Lexicographically_Smallest_Permutation_Greater_Than_Target_All_Languages.md

📺 Watch the full walkthrough on YouTube:
https://www.youtube.com/watch?v=7M5d80mRqG8

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LeetCode 3116 (Hard) — binary search + inclusion-exclusion makes it easy

Shaan Yadav — Fri, 21 Aug 2026 09:53:53 +0000

Full walkthrough: https://www.youtube.com/watch?v=vFuFA3ByCs0

LeetCode 3116 — Kth Smallest Amount With Single Denomination Combination. Here’s the trick everyone misses:

Brute force (generate all multiples, pick k-th) fails because k can reach 2×10⁹.

The real approach:

Binary search the answer X
Count valid amounts ≤ X using inclusion-exclusion
Odd subsets add, even subtract (bitmask over coins)
LCM via GCD, break when LCM > X
O(n · 2ⁿ · log(k·M)) — passes cleanly.

The 26% acceptance rate makes this look harder than it is. Once you see the count(X) monotonic trick, it clicks.