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Meta Interview Problem #3 — K-th Largest Element in Array

Meta Meta Interview Problem #3 — K-th Largest Element in Array

Problem (verbatim):“Given an integer array and an integer number k. Return the k-th largest element in the array. Examples:• array = [5, −3, 9, −1]• k = 0 ⇒ return: 9• k = 1 ⇒ return: 5• k = 3 ⇒ return: −3” summary (concise approach):Return the k-th largest (0-indexed) value. The VOprep team has long accompanied…

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Meta 2025-10-29
Meta Interview Problem #2 · Vertical Order Traversal of a Binary Tree

Meta Meta Interview Problem #2 · Vertical Order Traversal of a Binary Tree

Problem Statement (English original)Assume a binary-tree node: Given the root of a binary tree, output the node values in vertical order (column order) from leftmost column to rightmost column.Within each column, list nodes top-to-bottom in the order they are encountered by a standard BFS (or by row index if you compute coordinates). Illustrative example (matching…

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Meta 2025-10-29
Meta Interview Problem #1 · Normalize Path (simulate cd)

Meta Meta Interview Problem #1 · Normalize Path (simulate cd)

Problem Statement (English original)You are given a current working directory cwd (an absolute Unix-style path) and a cd(arg) string which can be either an absolute path (starts with /) or a relative path (may include segments . and ..).Implement a function that returns the normalized absolute path after applying cd(arg) from cwd. Rules: Examples (from…

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Meta 2025-10-29
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