Airbnb Coding Interview Questions
Real coding, system design, and DSA questions from Airbnb loops - with worked solutions and active-recall review.
- Valid Parentheses
Five escalating takes on one bracket string: validate it, point editor squigglies at it, mine the longest valid substring, repair a broken file, and validate with a corruptable wildcard.
Codinghard3mo
+12 - IPv4 Address Iterator and CIDR
Convert dotted-quad to 32-bit integers and back, iterate forward and reverse over a range, parse CIDR notation, and decompose an arbitrary range into the minimum CIDR cover.
Codingmedium3mo
- Spreadsheet with Formulas
Cells hold literals or formulas that reference other cells. set_cell must evaluate each cell so get_cell is fast; later levels propagate changes to dependents and reject updates that would form a cycle.
Codinghard3mo