Given a number N. The task is to find the Nth Harmonic Number.
Let the nth harmonic number be Hn.
The harmonic series is as follows:
H1 = 1
H2 = H1 + 1/2
H3 = H2 + 1/3
H4 = H3 + 1/4
Hn = Hn-1 + 1/n
Input : N = 5 Output : 2.45 Input : N = 9 Output : 2.71786
The idea is to traverse from H1 and then consecutively keep finding H2 from H1, H3 from H2 ….. and so on.
Below is the program to find N-th Harmonic Number:
Time Complexity: O(N)
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