Kth Largest Element in an Array
Explore how to identify the kth largest element in an integer array by employing heaps and frequency analysis. Understand problem constraints and develop efficient algorithms to solve common coding interview challenges involving Top K elements.
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Statement
Given an integer array, nums, and an integer, k, determine and return the kth largest element in the array.
Note: The
kthlargest element is defined with respect to the array’s sorted order (descending), and does not necessarily correspond to thekthunique value.
Constraints:
-
knums.length -
nums[i]
Examples
Understand the problem
Let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:
Kth Largest Element in an Array
What is the 4th largest element in the following unsorted array?
[5, 12, 9, 0, 6, 7, 1, 8, 4, 9]
9
7
8
6
Figure it out!
We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.
Try it yourself
Implement your solution in main.cpp in the following coding playground:
int FindKthLargest(vector<int>& nums, int k){// Replace this placeholder return statement with your codereturn -1;}