Tags
Python Coding Interview, python faaang coding interview, Python Interview Questions, Python Puzzles
Python | Find the missing number in the array of Ints
In this puzzle you have to find the missing number from the list of sequential Ints starting 1
Sample Input List
-- a = [1, 2, 3, 5, 6 ,7 ,8 ,9] -- |
Output
-- 4 -- |
Solution-1
-- a = [1, 2, 3, 5, 6 ,7 ,8 ,9] cnt = len(a)+1 Total = ( cnt * (cnt + 1) ) / 2 y = int(Total - sum(i for i in a)) print(y) -- |
Output
--In Python3 4 -- |
Enjoy 🙂
Please add a comment(s) if you have one or multiple solutions in mind. Thank You.
Pawan Khowal
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