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TBTridib Baniktridib.hashnode.devJul 10 · 5 min read

I Auto-Save Every Accepted HackerRank Solution to GitHub — Here's How

I practice on HackerRank a lot. The problems are fine, but I kept losing my own work. I'd solve something, move on, and weeks later I couldn't remember: What trick I used The time/space complexity o

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SRSharanya Ramchandrablog-sharanya.hashnode.devJun 29 · 6 min read

Finding My Way to HackerRank

This is me finally writing about my internship — a couple of weeks after finding out I got converted to full-time. I hadn’t updated my LinkedIn about my HackerRank internship. I had made a deal with m

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JMJuan Mathews Rebello Santosfreecodecamp.orgJun 25 · 12 min read

How I Became Brazil's First Visually Impaired Cybersecurity Graduate — and Changed Vulnerability Research

I was born prematurely at six months. My mother's placenta detached before delivery, and she essentially "gave birth" before I came out. Two days after my birth, doctors found a heart murmur that requ

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SPSneha Poojarydsamadesimple.hashnode.devMay 26 · 4 min read

Sliding Window Algorithm Explained Visually | From Brute Force to Optimization

If you’ve solved DSA problems before, chances are you’ve come across questions like: Longest Substring Without Repeating Characters Maximum Sum Subarray of Size K Minimum Window Substring At firs

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SCSamihan Chatterjeesamihan.hashnode.devMar 26 · 6 min read

Project OBLITERATUS

OBLITERATUS OBLITERATUS is a specialized open-source toolkit designed for "abliteration"—the surgical identification and removal of refusal behaviors in large language models (LLMs) without the need f

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SAShahwar Alam Naqviis-power-of-two.hashnode.devDec 7, 2025 · 1 min read

HackerRank: Weather Observation Station 1

Question and Answer: Key Points: What the Query Does Retrieves the CITY and STATE fields for every row in the STATION table Key SELECT Fields Only CITY and STATE are requested (not other columns) Why It Works No WHERE condition → returns all st...

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SAShahwar Alam Naqviis-power-of-two.hashnode.devDec 7, 2025 · 1 min read

HackerRank: Japanese Cities' Names

Question and Answer: Key Points: What the Query Does Selects the NAME of every city located in Japan Key Condition COUNTRYCODE = 'JPN' filters rows to only Japanese cities Why It Works Only the NAME column is returned, exactly as the problem as...

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SAShahwar Alam Naqviis-power-of-two.hashnode.devDec 6, 2025 · 1 min read

HackerRank: Japanese Cities' Attributes

Question and Answer: Key Points: What the Query Does Retrieves all columns for every city located in Japan Key Conditions Used COUNTRYCODE = 'JPN' filters only Japanese cities Why It Works SELECT * returns the complete details of each matching ...

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SAShahwar Alam Naqviis-power-of-two.hashnode.devDec 6, 2025 · 1 min read

HackerRank: Select By ID

Question and Answer: Key Points: What the Query Does Fetches all columns for the city with ID = 1661 Key Conditions Used WHERE ID = 1661 ensures we only retrieve the specific city requested Why It Works SELECT * returns all available fields (ID...

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SAShahwar Alam Naqviis-power-of-two.hashnode.devDec 6, 2025 · 1 min read

HackerRank: Revising the Select Query II

Problem: https://www.hackerrank.com/challenges/revising-the-select-query-2 Question: Code: SELECT NAME FROM CITY WHERE COUNTRYCODE='USA' AND POPULATION>120000 Key Points: What the Query Does Retrieves the names of U.S. cities Only cities...

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#hackerrank

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Trending tags this week

I Auto-Save Every Accepted HackerRank Solution to GitHub — Here's How

Finding My Way to HackerRank

How I Became Brazil's First Visually Impaired Cybersecurity Graduate — and Changed Vulnerability Research

Sliding Window Algorithm Explained Visually | From Brute Force to Optimization

Project OBLITERATUS

HackerRank: Weather Observation Station 1

HackerRank: Japanese Cities' Names

HackerRank: Japanese Cities' Attributes

HackerRank: Select By ID

HackerRank: Revising the Select Query II