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Data Structures notes for developers

Master Data Structures with a curated set of 2 developer notes — core concepts, patterns, and interview prep. Maintained by the DevRecall team.

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Data Structures

Arrays, Strings & Hash Maps

Arrays, Strings & Hash Maps Complexity Quick Reference Data Structure | Access | Search | Insert | Delete ------------------|--------|--------|--------|------- …

Data Structures

Trees, Graphs & Sorting

Trees, Graphs & Sorting Binary Trees — BFS & DFS class TreeNode { constructor( public val: number, public left: TreeNode | null = null, public right: TreeNode |…

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TypeScriptgeneral

Interview Questions

TypeScript Interview Questions Comprehensive TypeScript interview questions covering type system, generics, utility types, and best practices: Fundamentals 1. What is TypeScript? TypeScript is a typed…

Mar 28, 2026
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TypeScriptgeneral

Advanced Types (Generics & Utility Types)

TypeScript Advanced Types Generics // Generic function function identity<T>(arg: T): T { return arg; } const num = identity<number>(42); // Explicit const str = identity('hello'); // Inferred // Gener…

Mar 3, 2026
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