Kth Largest Element in an Array
Explore how to determine the kth largest element in an array by applying efficient approaches like heaps and frequency counting. This lesson helps you understand the problem constraints and implement a structured solution useful in coding interviews.
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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;}