Solution: Find K Largest Elements in an Array
Let’s solve the Find K Largest Elements in an Array problem.
Statement
Given an array of integers, nums
, and a positive integer, k
, find the k largest elements in the array.
Constraints:
k
nums.length
nums[i]
Solution 1: Utilizing sort
In this solution, we sort the given array of numbers in descending order, meaning the largest numbers come first. Then, we select the first k
elements from the sorted array, which are the k
largest elements in the original array, and return them.
Let’s look at how the implementation of the algorithm works:
The
nums
undergoes sorting in descending order utilizing the sort method with thegreater<int>()
parameter.Using a
for
loop firstk
elements are retrieved from the sorted array.These first
k
elements, now representing the largest values, are returned as the output.
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