--- title: "Ayush (@ayush-devhub) | Hashnode" description: "Everyone needs an outlet. Read the latest articles by Ayush on Hashnode." url: "https://hashnode.com/@ayush-devhub" --- @ayush-devhub # Ayush @ayush-devhub · Joined August 2025 Everyone needs an outlet. ### [Day 3 - LeetCode Learning Log](https://ayush-30-days-of-leetcode.hashnode.dev/day-3-leetcode-learning-log?utm_source=hashnode&utm_medium=feed) 🚀 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.dev](https://ayush-30-days-of-leetcode.hashnode.dev/day-3-leetcode-learning-log?utm_source=hashnode&utm_medium=feed) [Sep 6, 2025](https://hashnode.com/posts/day-3-leetcode-learning-log/68be422171e97874ad3c313c) ### [Day 2 – LeetCode Learning Log](https://ayush-30-days-of-leetcode.hashnode.dev/day-2-leetcode-learning-log?utm_source=hashnode&utm_medium=feed) LeetCode Learning Log Day 2: Practiced Binary Search, Sliding Window, and solved problems using Two Pointer technique 2 min read · [ayush-30-days-of-leetcode.hashnode.dev](https://ayush-30-days-of-leetcode.hashnode.dev/day-2-leetcode-learning-log?utm_source=hashnode&utm_medium=feed) [Sep 6, 2025](https://hashnode.com/posts/day-2-leetcode-learning-log/68bc333fedf00a0d4d401611) ### [Day 1 – LeetCode Learning Log](https://ayush-30-days-of-leetcode.hashnode.dev/day-1-leetcode-learning-log?utm_source=hashnode&utm_medium=feed) Day 1 of LeetCode journey: Practicing frequency maps, solving problems like "Valid Anagram" and "Two Sum," and setting goals for tomorrow 2 min read · [ayush-30-days-of-leetcode.hashnode.dev](https://ayush-30-days-of-leetcode.hashnode.dev/day-1-leetcode-learning-log?utm_source=hashnode&utm_medium=feed) [Sep 5, 2025](https://hashnode.com/posts/day-1-leetcode-learning-log/68bb01e2b19ddcbeee968692) ### [Day 5: Java CLI Expense Tracker Backend](https://ayush-devhub.hashnode.dev/day-5-java-cli-expense-tracker-backend?utm_source=hashnode&utm_medium=feed) What 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.dev](https://ayush-devhub.hashnode.dev/day-5-java-cli-expense-tracker-backend?utm_source=hashnode&utm_medium=feed) [Sep 1, 2025](https://hashnode.com/posts/day-5-java-cli-expense-tracker-backend/68b5d39116e1b0a807e1974d) ### [Day 4: Java Console Based Student Grade Manager](https://ayush-devhub.hashnode.dev/day-4-java-console-based-student-grade-manager?utm_source=hashnode&utm_medium=feed) What 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.dev](https://ayush-devhub.hashnode.dev/day-4-java-console-based-student-grade-manager?utm_source=hashnode&utm_medium=feed) [Aug 31, 2025](https://hashnode.com/posts/day-4-java-console-based-student-grade-manager/68b47a5cea40575f38d81241)