Memory game as an online experiment - Conflicts between my concept and UX
As a data analyst, I wanted to start a project where I could work with my own dataset. My goal is to build a database that is suitable for predictiv…
Testing & QA
⚑ Сообщить о проблемеПоследние новости Testing & QA от Tech News
Все темы
agents
ai
api
architecture
automation
backend
beginners
career
claude
cybersecurity
devchallenge
devops
discuss
javascript
llm
machinelearning
mcp
node
opensource
performance
productivity
programming
python
security
showdev
softwareengineering
testing
tutorial
typescript
webdev
I Built My Own Fail-Fast HashMap — Here's Why a Boolean Flag Wasn't Enough
If you've done LeetCode's Design HashMap , you've implemented put , get , and remove . What that exercise usually skips is the part that actually br…
Monotonic Stack: The Matrix of Array Problems
The Quest Begins (The “Why”) Ever spent an hour wrestling with a brute‑force solution that felt like you were trying to break through a concrete wal…
Dynamic Programming: The Matrix of Patterns
The Quest Begins (The "Why") I still remember the first time I saw a dynamic programming question pop up on a whiteboard during an interview. The pr…
What Building a C++ Benchmarking Suite Taught Me About "Simple" Data Structures
We all know the Big-O complexity of basic data structures. Arrays are O(n) for search. Hash maps are O(1). Linked lists are... well, complicated. Bu…
Greedy Algorithms: Choosing Your Path Like Neo in The Matrix
The Quest Begins (The "Why") I still remember the first time I stared at a whiteboard covered in overlapping intervals during a mock interview. The…
The circular_buffer trap: how a 'faster' data structure spiked my CPU from 2% to 25%
There's a special kind of bug that only shows up after you've made your code "better." You swap in the data structure everyone agrees is more effici…
The Union‑Find Fellowship: Finding Your Tribe in Code
The Quest Begins (The "Why") I still remember the first time I stared at a LeetCode problem that asked me to count the number of islands in a grid.…
JavaScript has no sorted containers. I built one for TypeScript.
JavaScript ships with Array , Set , and Map — but nothing that keeps its elements sorted as you insert. If you've ever built a leaderboard, an order…
What I Learned in Week 8 of Python — Stacks, Queues & Linked Lists
Week 7 was hash maps and two pointers — patterns that lean on Python's built-in dict , set , and list . Week 8 was different. This week I built the…
The Monotonic Stack: Like Gandalf's Staff for Array Problems
The Quest Begins (The "Why") Honestly, I still remember the first time I stared at the Daily Temperatures problem on LeetCode and felt like I was tr…
Sliding Window: The Force Awakens – Detect the Pattern and Never Get Stuck Again
The Quest Begins (The “Why”) I still remember the first time I faced a “minimum size subarray sum” question in an interview. The problem stared back…
How Constraints Changed the Way I Think About Algorithms
Over the past couple of years, I've spent a lot of time preparing for software engineering interviews. Like many developers, I started my Data Struc…
Segment Trees: The “Divide‑and‑Conquer” Trick That Actually Makes Sense
Segment Trees: The “Divide‑and‑Conquer” Trick That Actually Makes Sense Quick context (why you're writing this) I remember the first time I saw a se…
The Fastest Set Is Often Not a Set: 4050 Duplicate-Detection Benchmarks
Duplicate detection looks solved: keep a hash set, skip what you have already seen. A benchmark suite of 4050 measurements across 480 workloads says…
🚀 How to Solve Arrays and Hashing Problems in Data Structure?
Arrays and Hashing are among the most important topics in Data Structures & Algorithms (DSA) and are frequently asked in coding interviews at co…
Structure Before Bytes: How Metarc Beats tar+zstd on Real Code
tar+zstd is very hard to beat. So I stopped trying to beat it as a byte compressor. Instead, I tried something else: compress the structure first, t…