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Coding Basics Algorithms Pattern Recognition

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0/ 122 problems solved

Prerequisites

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Essential concepts you need before diving into coding problems

Big O & Complexity

Core Primitives

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Strings and arrays — the most common interview building blocks

String Manipulation

Data & Logic

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Numbers, hash maps, loops, and conditional reasoning

Hash Map Basics

Iteration Patterns

Bridge to Algorithms

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Recursion, sorting, matrices, and more — preparing for algorithm patterns

Basic Recursion

Sorting & Comparators

Matrix / 2D Basics

Conditionals & Logic

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Bit Manipulation Basics

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Edge Cases & Parsing