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Missing ranges of numbers
Basic Accuracy: 0.0% Submissions: 5 Points: 1

Given an array Arr of N positive integers, find the missing elements (if any) in the range 0 to max of Arri.

Example 1:

Input:
N = 5
Arr[] = {62, 8, 34, 5, 332}
Output: 0-4 6-7 9-33 35-61 63-331
Explanation: Elements in the range 0-4, 6-7,
9-33, 35-61 and 63-331 are not present.


Example 2:

Input:
N = 4
Arr[] = {13, 0, 32, 500}
Output: 1-12 14-31 33-499
Explanation: Elements in the range 1-12,
14-31 and 33-499 are not present.


Your Task:
You don't need to read input or print anything. Your task is to complete the function findMissing() which takes the array of integers arr and its size as input parameters and returns a string denoting the missing elements. If
there are more than one missing, collate them using hyphen (-) and separate each different range with a spaceIf there are no missing element then return "-1".

Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)

Constraints
1 <= N <= 107
0 <= Arri <= 107

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