Python Data Structures and Algorithms - Recursion: Calculate the geometric sum
Python Recursion: Exercise-9 with Solution
Write a Python program to calculate the geometric sum of n-1.
Note : In mathematics, a geometric series is a series with a constant ratio between successive terms.
Example :
Sample Solution:-
Python Code:
def geometric_sum(n):
if n < 0:
return 0
else:
return 1 / (pow(2, n)) + geometric_sum(n - 1)
print(geometric_sum(7))
print(geometric_sum(4))
Sample Output:
1.9921875 1.9375
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Python: Tips of the Day
Decapitalizes the first letter of a string:
Example:
def tips_decapitalize(s, upper_rest=False):
return s[:1].lower() + (s[1:].upper() if upper_rest else s[1:])
print(tips_decapitalize('PythonTips'))
print(tips_decapitalize('PythonTips', True))
Output:
pythonTips pYTHONTIPS
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