Feb 2 · 4 min read · Greedy problems often look trivial until a single constraint quietly invalidates your intuition. LeetCode 3010 is a great example of how misreading what truly defines the cost of a structure leads to wrong assumptions and failed solutions. This artic...
Join discussionJan 21 · 2 min read · Ever looked at a string and thought: “Yes, today I will subtract characters from each other.” No?Well, LeetCode did. Today’s problem is deceptively simple, which makes it dangerous — because you either: overthink it, or feel suspicious about how ...
Join discussionOct 2, 2025 · 2 min read · Introduction Hi, I’m Mohit Sharma 👋. I’m currently in my 3rd year of Computer Science engineering. Over the past months, I’ve been exploring coding and web development using HTML, CSS, and a little bit of Java. But recently, I realized that to grow ...
Join discussionAug 4, 2025 · 2 min read · Today marks the beginning of this journey not just for me, but hopefully for us. Before jumping straight into Data Structures and Algorithms (DSA), I took a step back and did something very important:I recalled the essential Python concepts that form...
Join discussionAug 1, 2025 · 2 min read · Hey there! Over the last few weeks, I’ve been posting regularly on LinkedIn, and over 600 of you subscribed to my newsletter to learn how to code for free using AI and YouTube. Today, I’m officially kicking off my journey to master Data Structures an...
Join discussionJun 12, 2025 · 4 min read · 📚 Problem Overview In Vertical Order Traversal of a Binary Tree, we need to: Print nodes column-wise from left to right. Sort nodes in each column top to bottom. If two nodes share the same position, sort their values in ascending order. 💡 Th...
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May 6, 2025 · 4 min read · Count Digits in a Number – Code, Explanation & Real-World Use Case 🚀 Introduction In this blog post, I'll walk you through how I solved the problem of counting digits in a number. This can help developers looking to understand different approaches (...
Join discussionMar 18, 2025 · 4 min read · Problems Solved Today Today's focus was Linked Lists, and I solved many interesting problems. While I was already familiar with the concepts, it had been a while since I last practiced them, so it felt like a fresh challenge. List of Solved Problems ...
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Feb 2, 2025 · 4 min read · 📌 Introduction Python is one of the most popular programming languages due to its simplicity, readability, and vast ecosystem. Whether you're a beginner or an experienced developer, mastering Python and Data Structures & Algorithms (DSA) will greatl...
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Sep 7, 2024 · 2 min read · Classes & Pointers In DSA, classes & pointers play a very important role in data structures. For example, a linkedlist has the following functions in it: def __init__(self,value) def append(self,value) def pop(self) def prepend(self,index,value) ...
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