def solution(arr):
sum(arr)/len(arr)
If you run it with the code above, it says it's wrong when you submit the answer, but I don't know why.
--Problem--
https://programmers.co.kr/learn/courses/30/lessons/12944 (Programmers Algorithm Practice Problem.)
A function that returns the average value of an array arr containing an integer Complete the solution.
Restrictions
arr is an array of length greater than or equal to 1 and less than or equal to 100.
The element of arr is an integer greater than or equal to -10,000 and less than or equal to 10,000.
python
I got it right because I did the same thing, but if you submitted it as it is, I think the problem is that you didn't use return.
float Check if it is being used.
arr = [9,9,8];
print(sum(arr)/len(arr)); // 8
print(sum(arr)*1.0/len(arr)); // 8.66666666667
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