 k largest elements
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Given an array Arr of N positive integers, find K largest elements from the array.  The output elements should be printed in decreasing order.

Example 1:

Input:
N = 5, K = 2
Arr[] = {12, 5, 787, 1, 23}
Output: 787 23
Explanation: 1st largest element in the
array is 787 and second largest is 23.


Example 2:

Input:
N = 7, K = 3
Arr[] = {1, 23, 12, 9, 30, 2, 50}
Output: 50 30 23
Explanation: 3 Largest element in the
array are 50, 30 and 23.


You don't need to read input or print anything. Your task is to complete the function kLargest() which takes the array of integers arr, n andas parameters and returns an array of integers denoting the answer. The array should be in decreasing order.

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(K*logK)

Constraints:
1 ≤ K ≤ N ≤ 105
1 ≤ Arr[i] ≤ 106

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