Check whether an integer number given is palindrome or not - Leet Code Solution
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward.
The Archive of
Intentional Thought
Technical essays, architectural deep-dives, and practical guides at the intersection of code and design.
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Remove nth Node from Last - Leet Code Solution
Given a linked list, remove the n-th node from the end of list and return its head.
How to sync Mongodb data to ElasticSearch by using MongoConnector
How to sync MongoDB data to Elasticsearch using the MongoConnector open-source tool.
How to run MongoDB replica set on Docker
How to set up a MongoDB replica set cluster using Docker containers for local development and testing.
How to run ElasticSearch cluster on Docker with Kibana on Linux
Step-by-step guide to running an Elasticsearch cluster with Kibana on Docker using docker-compose on Linux.
How to prepare for your next Coding Interview
Practical tips on how to prepare for coding interviews — study strategies, practice approaches, and what to focus on.
How to calculate angle between hour and minute hand, given a time
Calculate the angle between the hour and minute hands of a clock given any time, using simple degree-per-minute formulas.
How to use NPM Rest API to get audit (npm audit) result
How to use the NPM audit REST API to check for package vulnerabilities without installing packages.
Convert String to Integer - atoi - Leet Code Solution
LeetCode "String to Integer (atoi)" solved step by step — whitespace, sign, digit parsing, and 32-bit overflow clamping — with full code.
Check whether number is palindrome or not - Leet Code Solution
Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward.
Zigzag Pattern String Conversion - Leet Code Solution
LeetCode "Zigzag Conversion" solved by simulating rows with a direction flag and per-row string buffers, with full code walkthrough.
Reverse digits of a signed integer - Leet Code Solution
LeetCode "Reverse Integer" solved by popping and pushing digits with modulo/multiply, with 32-bit overflow checks and full code walkthrough.