GGunjan C.·Jul 17LeetCode #01 | 2390. Removing Stars From a String | Stack Approach | Java, C & PythonLearn LeetCode 2390 with a visual stack explanation and clean Java, Python, and C solutions. Perfect for DSA and interview preparation.4 min read·leetcodevisualized.hashnode.dev1
AAnkit kumar Singh·Jul 11🚀 Mastering LeetCode 611: Valid Triangle Number | From Brute Force to Two Pointers (Complete Beginner Guide) Introduction When I first solved this problem, my first thought was: "Let's check every possible triplet." That solution works, but it has a time complexity of O(n³). Then I looked at the optimized7 min read·ankitsingh2003.hashnode.dev
PPuja Jorwar·Jun 30Next Permutation — The 3-Step Algorithm That Made Everything ClickMost solutions I found online just showed me code with zero explanation of why it works.After solving this problem, I finally understood the pattern. Let me save you the confusion. 📖 First — What is7 min read·pujajorwar.hashnode.dev
AAJIT KUMAR PANDIT·Apr 24Finding Triplets That Sum to Zero: A Deep Dive into threeSumHello everyone! Today, we're going to unravel a classic problem in computer science: finding all unique triplets in an array that sum up to zero. This is a common interview question and a great way to6 min read·ajitkumarpandit.nakprc.com
SSyed Faysel Ahammad Rajo·Mar 11Learning DSA with JavaA focused 15-day plan can give you a fast, practical start in data structures and algorithms (DSA) using Java. The goal of this plan is not to make you an expert in two weeks, but to give you a solid6 min read·faysel.hashnode.dev
Hhimanshu·Feb 13Day 11 - Two Integer Sum IIFind two indices from a sorted array that sum to a target, using a two-pointer technique2 min read·blogs-himanshu.hashnode.dev
Hhimanshu·Feb 12Day 10 - Valid PalindromeDetermine if a string is a palindrome, ignoring case and non-alphanumeric characters, using a two-pointer approach2 min read·blogs-himanshu.hashnode.dev
Hhimanshu·Feb 11Day 9 - Longest Consecutive SequenceLearn how to find the length of the longest consecutive sequence in an array with O(n) time complexity3 min read·blogs-himanshu.hashnode.dev
Hhimanshu·Feb 5Day 4 - Group AnagramsGroup anagrams using sorting and hash tables. Two approaches discussed with JavaScript examples and time-space complexity analysis5 min read·blogs-himanshu.hashnode.dev
AARCHANA GURUSAMY·Feb 4Problem: Leet Code 7 - Reverse IntegerGrasp this straightforward technique to see if a reversed number fits the set limits2 min read·archana-code-diary.hashnode.dev
