Python Challenges: Check a sequence of numbers is an arithmetic progression or not
Python Challenges - 1: Exercise-20 with Solution
Write a Python program to check a sequence of numbers is an arithmetic progression or not.
In mathematics, an arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.
For example, the sequence 5, 7, 9, 11, 13, 15 ... is an arithmetic progression with common difference of 2.
def is_arithmetic(l): delta = l - l for index in range(len(l) - 1): if not (l[index + 1] - l[index] == delta): return False return True print(is_arithmetic([5, 7, 9, 11])) print(is_arithmetic([5, 8, 9, 11]))
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