nth digit of Fibonacci
Basic Accuracy: 48.36% Submissions: 366 Points: 1

A Fibonacci series (starting from 1) written in order without any spaces in between, thus producing a sequence of digits. Find the nth digit in the sequence.

Example 1:

Input: n = 3
Output: 2 
Explanation: 3rd digit of fibonacci 
series is 2(1123.....).

Example 2:

Input: n = 7
Output: 1
Explanation: 7th digit of fibonacci
series is 1(11235811.....).

Your Task:  
You dont need to read input or print anything. Complete the function nthFibonacciDigit() which takes n as input parameter and returns nth digit of fabonacci series. 

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

1<= n <=100

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nth digit of Fibonacci

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