Question 2

In the context of data analysis and machine learning, a dataset containing an array of integers has been provided. Each integer is denoted as arr[i] (0 ≤ i < n). The task in this data-centric domain is to predict the kth smallest positive integer that is not found within the dataset, arr.

Note: The smallest positive integer is 1.

Example

n = 5
arr = [1, 4, 7, 3, 4]
k = 5

The first five missing positive integers are [2, 5, 6, 8, 9].
The 5th smallest positive integer not in the dataset is 9.

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Function Description

Complete the function findMissingInteger in the editor below.

findMissingInteger

Parameters:

• int arr[n]: a machine learning dataset
• long k: find the kth smallest positive integer that is not present in the dataset.

Returns:

• long: the kth smallest positive integer that is not in the dataset.

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Constraints:

• 1 ≤ n ≤ 2 * 10^5
• 1 ≤ arr[i] ≤ 10^9

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