Given an array of size N-1 such that it only contains distinct integers in the range of 1 to N. Find the missing element.
Example 1:
Input:
N = 5
A[] = {1,2,3,5}
Output: 4
Example 2:
Input:
N = 10
A[] = {6,1,2,8,3,4,7,10,5}
Output: 9
Your Task :
You don't need to read input or print anything. Complete the function MissingNumber() that takes array and N as input parameters and returns the value of the missing number.
Expected Time Complexity: O(N)
Expected Auxiliary Space: O(1)
Constraints:
1 ≤ N ≤ 10^{6}
1 ≤ A[i] ≤ 10^{6}

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