Kth Missing Positive Number
Updated Feb 24, 2026
Problem
Return the k-th missing positive integer.
Constraints
1 <= arr.length <= 1000
Examples
Example 1
Input:
{"arr": [2, 3, 4, 7, 11], "k": 5}
Output:
9
Function Signature
def findKthPositive(self, arr: list[int], k: int) -> int
How to Submit
Implement a Solution class with a findKthPositive method.
Your method will be called with the input parameters and should return the answer.