#801Easy· asked at 7 companies
Kth Missing Positive Number
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What we know
Example 1
Input: arr = [2,3,4,7,11], k = 5 Output: 9
Missing: 1, 5, 6, 8, 9, 10, 12, ... The 5th is 9.
Example 2
Input: arr = [1,2,3,4], k = 2 Output: 6
Constraints
- •
1 <= arr.length <= 1000 - •
1 <= arr[i] <= 1000 - •
1 <= k <= 1000 - •
arr[i] < arr[j]for1 <= i < j <= arr.length