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Data Structures & Algorithms

A collection of 6 issues

Build your own Redis (2/5) - Redis Persistence

Following the previous post, now, we will talk about redis persistence. While primarily known as an in-memory database, Redis offers a sophisticated durability model through two complementary strategies: RDB snapshots and AOF logs. Let's dive deep into how these work, implementing our own RDB parser along the way.

How Computers Generate Random Numbers

Imagine this: you're playing your favorite video game, and an enemy drops a rare item. Or maybe you're shuffling your Spotify playlist, wondering how it picks the next song. Behind these everyday moments lies a fascinating paradox: how do computers, which are fundamentally deterministic machines, create

LeetCode - First Missing Positive

Description: https://leetcode.com/problems/first-missing-positive/description/ This problem requires finding the smallest missing positive integer in an unsorted array. The key challenge is achieving %O(N)% time and %O(1)% space complexity without using extra space for hash tables. Key insights: * Since we're looking for the first

LeetCode - Trapping Rain Water

Description: https://leetcode.com/problems/trapping-rain-water/description/ To solve this problem, the main observation is that at each index i, the amount of water that can be trapped depends on the the highest bars to its left and right elements, minus its own height. Key insights: * Water level at index_

The Easiest Way to Add Code Interpreter into Your LLM Apps

Hey mate, I recently tried to add something like the ChatGPT Code Interpreter plugin to my LLM application. I found many libraries and open-source options available, but they seemed a bit complicated to set up, and some required credits for cloud computing. So, I decided to develop my own library

Bloom Filter: Cấu trúc dữ liệu dựa trên xác suất

Bloom filter là một cấu trúc dữ liệu dựa trên xác suất được giới thiệu lần đầu bởi Burton Howard Bloom vào năm 1970. Đây là một cấu trúc dữ liệu đơn giản nhưng cực kỳ hiệu quả và được dùng trong rất nhiều ứng dụng khác nhau, đặc biệt