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Kth Largest Element in an Array is a medium coding interview question covering heap, arrays, sorting — the kind asked at FAANG (Facebook/Meta, Apple, Amazon, Netflix, Google) and AI-first companies like Anthropic, OpenAI, and Nvidia.
Find the kth largest element in an unsorted array without fully sorting it. Example: nums = [3,2,1,5,6,4], k = 2 -> 5.
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