Meta Interview Question Bank
Meta sits mid-transition between two interview loops in 2026. The legacy track still drives most candidates through CodeSignal-style OAs and tightly time-boxed coding rounds, while a new AI-Native loop layers in AI-assisted coding, AI-Enabled system design, and an AI-oriented behavioral round on top. Which track you land in depends on org and recruiter, not candidate preference.
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OJ Problems
practice in the online judgeSum Root-to-Leaf Numbers in a Binary TreeIsland Size Existence Query APIValid Palindrome After Deleting at Most K CharactersFind a Local Minimum in an ArrayCount Subarrays with Sum Equal to TargetShortest Path in a Binary Matrix and Reconstruct the PathShortest Path from the Leftmost Column to the Rightmost Column in a Blocked GridMatch Signals Received by Two Antennas Within a Maximum DelayDesign and Implement a Concurrent Tally ServiceImplement an O(1) Random-Pop ContainerFind a Local Minimum in an ArrayBinary Tree Vertical Order TraversalResolve a Unix cd Path Against a Current Working DirectoryMerge Three Sorted Arrays and Remove DuplicatesPlan Round Trip With Minimum Flight CostImplement Scaled Dot-Product AttentionValid Palindrome IIVerifying an Alien DictionaryParse System Metrics and Warn on Threshold BreachesEvaluate Arithmetic Expression Without ParenthesesShortest Unique PrefixMeeting Rooms IIMinimum Add to Make Parentheses ValidTimed Cache / Expiring Key-Value CacheExclusive Time of FunctionsOptimize Word Container / String Matching Queries (ParanoidEcho)Maze Solver with Keys and Doors (Grid BFS)AI Coding: Maze shortest path with keys/doors (BFS pitfalls)Coding: "伞二舅" + "妖气" variant (details missing)In-Memory Record Store with Timestamp and TTL