2487. Remove Nodes From Linked List
In this post i'm gone explain liked list an famous leetcode problem that is " Remove Nodes from linked list ". Problem Statement: You are given the he…
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Tree Traversal: Why the Order You Pick Is a Data Flow Decision
Tree traversal usually gets taught as three separate algorithms to memorize: preorder, inorder, postorder. They are not three algorithms. They are one…
LeetCode Solution: 1. Two Sum
Your First LeetCode Journey: Conquering 'Two Sum' (Problem 1) with Ease! Hey fellow developers! 👋 Kushalx here, and today we're diving into the absolu…
LeetCode Solution: 1752. Check if Array Is Sorted and Rotated
🔄 LeetCode 1752: Can You Un-Rotate This Array? (A Beginner's Guide) Hey there, fellow coders! 👋 Vansh2710 here, ready to demystify another exciting Le…
Interview Sheet Q2:- 121. Best Time to Buy and Sell Stock
Approach 1: Brute Force Try every possible buy day. For each buy day, try every sell day after it. Calculate profit and keep maximum. class Solution {…
Leetcode QOTD:- 33. Search in Rotated Sorted Array
Normally binary search works only on fully sorted arrays, but here one half is always sorted, and that is the key logic. Main Idea At every step: Find…
LeetCode Solution: 13. Roman to Integer
How to Conquer Roman Numerals: LeetCode #13 Explained Simply! Hey there, future coding superstar! 👋 Ever looked at Roman numerals and thought, "That's…
LeetCode Solution: 12. Integer to Roman
Unraveling the Mystery of Roman Numerals: A LeetCode Journey (Problem 12. Integer to Roman) Hey LeetCoders and aspiring developers! 👋 Today, we're tak…
Median of Two Sorted Arrays — LeetCode #4 (Hard)
The Problem Given two sorted arrays, return the median of all their elements combined, in logarithmic time. Example Input: nums1 = [1,3], nums2 = [2] …
Longest Substring Without Repeating Characters — LeetCode #3 (Medium)
The Problem Given a string s, return the length of the longest substring that contains no duplicate characters. Example Input: s = "abcabcbb" Output: …
3 and 4 Sum optimized Approach
3 Sum problem(2 pointer approach) Here,I discussed classic problem of both 3 Sum and 4 Sum problem. 3 Sum Problem Problem Statement Find all unique tr…
LeetCode Solution: 146. LRU Cache
LRU Cache: Because Your Computer Has Commitment Issues (LeetCode 146) Hello, fellow coders and aspiring digital hoarders! Today, we're diving into a L…
Two Sum — LeetCode #1 (Easy)
TL;DR Single-pass hash map lookup: store each number's index as you go, check for the complement before storing. O(n) time, O(n) space. The Problem Gi…
LeetCode Solution: 5. Longest Palindromic Substring
Longest Palindromic Substring: A Core String Algorithm Explained Welcome to another deep dive into a classic LeetCode problem! Today, we're tackling P…
Leetcode 2
I did LeetCode 2. Yup. That’s the headline. The classic Add Two Numbers. Submitted my solution thanks to the tremendous help of ChatGPT, but I still f…
Solving LeetCode 414 Third Maximum Number: A Streamlined Java Approach
Difficulty : Easy Topics : Array, Sorting Platform : Leetcode Problem Statement Given an integer array nums, return the third distinct maximum number …
The Amazon Bar Raiser Isn't Testing Your Solution. It's Testing the Follow Up.
You're 15 minutes into an Amazon coding round. You've identified the pattern, your solution handles the examples, you're about to submit. Then the int…
Am I Ready for FAANG? A Better Test Than Solving More LeetCode
You've solved 200 problems. Mediums you've already seen take fifteen minutes. The next one you haven't seen freezes you cold inside of five. And every…
I Found LeetCode for Software Design, and It’s Awesome
Disclosure: This post includes affiliate links; I may receive compensation if you purchase products or services from the different links provided in t…
Algorithmic intuition matters more than problem count in coding interviews
Two engineers prep for the same cycle. One solves more than 500 problems and freezes when the medium doesn't look like anything from the practice list…
AlgoExpert vs NeetCode: The Interview Skill Neither One Actually Trains
A few years back I worked through both AlgoExpert and NeetCode while preparing for interviews. The 100 polished videos and the 400+ free walkthroughs …
I Solved 200 LeetCode Problems and Still Froze in Interviews
A few years ago I solved 200 LeetCode problems and still froze on Mediums I hadn't seen. The breakthrough wasn't another hundred problems. It was a di…