Day 3 - LeetCode Learning Log🚀 Building Blocks I Practiced Today Slow Fast Pointer - Finding middle of LL Also called as Hare & Tortoise Algorithm. Used for detecting cycle, finding middle, happy number, etc. O(n) time, O(1) space // Finding middle of a Linked List ...2 min read·ayush-30-days-of-leetcode.hashnode.devSep 6, 2025
Day 2 – LeetCode Learning LogLeetCode Learning Log Day 2: Practiced Binary Search, Sliding Window, and solved problems using Two Pointer technique2 min read·ayush-30-days-of-leetcode.hashnode.devSep 6, 2025
Day 1 – LeetCode Learning LogDay 1 of LeetCode journey: Practicing frequency maps, solving problems like "Valid Anagram" and "Two Sum," and setting goals for tomorrow2 min read·ayush-30-days-of-leetcode.hashnode.devSep 5, 2025
Day 5: Java CLI Expense Tracker BackendWhat I Built Today (Need for Finishing) Today, I built a console-based Expense Tracker Backend using Java. This project uses an ArrayList, Hash Map and .txt file to track expenses. Users can perform the following operations: Console-based backend si...3 min read·ayush-devhub.hashnode.devSep 1, 2025
Day 4: Java Console Based Student Grade ManagerWhat I Built Today Today, I built a console-based Student Grade using Java. This project uses an ArrayList, Hash Map and txt file to track grades. Users can perform the following operations: Add a student. Add subjects & marks for the respective st...3 min read·ayush-devhub.hashnode.devAug 31, 2025
