Nikhil Lohia

96.3K subscribers

351 videos

I want to share with you my knowledge, that I have gained all my life. I like to see every task in your day to day life as an interesting problem to solve, a...

Latest Videos

Why you should never cheat in a coding interview

Grinding LeetCode isn't enough anymore. Build these 5 skills

AI Killed the Old Resume Format. Here's What Works in 2026.

First Missing Positive (LeetCode 41) — Marked Hard but the Trick is Embarrassingly Simple

8 GitHub Repos That Take You from Beginner to Senior Engineer

Sliding Window Maximum (LeetCode 239) — 48 Companies Ask This! Step-by-Step Deque Approach

I Analyzed 3,800 LeetCode Problems. Only 8 Patterns Matter

Two Sum 2 (LeetCode 167) — 3 Approaches from Brute Force to Optimal Asked by 17+ Companies

If You're Preparing for Coding Interviews in 2026, Watch This First

Merge k Sorted Lists (LeetCode 23) Interview Essential Binary Search, Divide and Conquer

Word Ladder (LeetCode 127) Interview Essential BFS , Level Order Traversal

Serialize and Deserialize a Binary Tree (LeetCode 297) Interview Essential Queues

Minimum Window Substring (LeetCode 76) Interview Essential Sliding Window + Two Pointers

Median of Two Sorted Arrays (LeetCode 4) Classic problem Interview Essential Visual solution

Trapping Rain Water (LeetCode 42) Interview Essential Full visual solution

Divide Two Integer (LeetCode 29) Without the use of multiply and division operator Bitwise

Smart Interview Grind The AI-Powered LeetCode Planner

XOR of numbers in a range [L, R] XOR operation in an array (LeetCode 1486) Innovative

Single Number 3 Find 2 unique element where all others elements appear twice Bit Manipulation

Single Number 2 Find unique element where all others elements appear thrice Bit Manipulation

Single Number 1 Find the unique element where all others are duplicated Bit Manipulation

Bit Manipulation - Part 7 Power Set

Bit Manipulation - Part 6 Minimum bit flips required to convert one number to other

System Design - Part 23 Companion Flashcards Free resource

Bit Manipulation - Part 5 Remove the last set bit Count the number of set bits

Bit Manipulation - Part 4 Check if a number is even or odd Check if a number is power of 2

Bit Manipulation - Part 3 Check if a bit is set Togglesetclear a bit

Bit Manipulation - Part 2 Swap 2 numbers without a temporary variable

Bit Manipulation - Part 1 Logical Operators (AND , OR, XOR)

Generative AI is dangerous - Dead Internet Theory