Binary Seach
Imagine you’re searching for a word in a dictionary.You don’t start from page 1, right?You open somewhere in the middle. If your word comes before → go left If it comes after → go right This is ex
Apr 13, 20263 min read19
Command Palette
Search for a command to run...
#algorithms
Articles tagged with #algorithms
Cyclic Sort
Problem Idea You are given an array of size n containing numbers from 1 to n. Your task:Place every number at its correct index Core Idea (Think Like This) “If the current number is not at its correc
Apr 9, 20264 min read10
Segregate 0s and 1s (In-Place Sorting)
When I first saw this problem, it looked very simple… But it actually teaches an important concept:How to optimize from 2 passes → 1 pass using two pointers Problem Statement You are given an array c
Apr 7, 20263 min read5
Prefix Sum Array Technique
Why Prefix Sum Array? Prefix Sum is a powerful technique used to optimize range sum queries and many subarray problems. In many problems, we are asked: “Find the sum of elements between index l and r
Apr 1, 20265 min read10
Why Your Code Gets TLE (Time Limit Exceeded)
When solving problems on platforms like Codeforces or LeetCode, many beginners face a common issue: TLE (Time Limit Exceeded) Let’s understand this in the simplest way possible. The Hidden Rule: 10⁸
Mar 17, 20265 min read10