problem0215

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Published: Feb 15, 2020 License: MIT Imports: 1 Imported by: 0

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215. Kth Largest Element in an Array

题目

Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.

For example, Given [3,2,1,5,6,4] and k = 2, return 5.

Note: You may assume k is always valid, 1 ≤ k ≤ array's length.

Credits:Special thanks to @mithmatt for adding this problem and creating all test cases.

解题思路

利用堆排序的特性,依次找出最大值。

见程序注释

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