Problem 44455. Find the average of a random sequance

Created by Shaul Salomon

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Write a function that generates random integers within a loop, and calculates the mean of the positive numbers only.

At each iteration a random integer between 0 and 10 is generated.

Only if the number is positive, it is added to the sequence.

The loop terminates when the number 0 is generated. This number is not considered for the mean.

You are not allowed to use the functions sum() and mean()

Examples:

Random sequence is: 4, 3, 5, 10, 3, 0
Output is: 5

Random sequence is: 0
Output is 0

Random sequence is: 5, 8, 1, 9, 3, 4, 6, 2, 2, 3, 1, 0
Output is: 4

Note: the function does not have an input. The output depends on the state of the random numbers generator.

Solve

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Last solution submitted on Oct 08, 2019

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2 Comments

2 Comments

David Verrelli on 23 Dec 2017

Hello, Shaul Salomon.
. . .
Could you please double-check the consistency of your test 7 with the problem statement? The problem statement specifies that "[...] when the number 0 is generated. This number is not considered for the mean." . . .

In test 7, I get only one random number value, which is zero, and this should be discarded. Therefore the set of numbers to average is an empty set: this empty set has a sum of zero (or undefined?) and — most importantly — a count of zero. So therefore the mean there should be undefined, or NaN, as far as I can understand. This is how I implemented Solution 1391527. Please let me know if I am overlooking some important point. . . . —Thanks, David.

Jean-Marie Sainthillier on 8 Mar 2018

Interesting problem.

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Problem 44455. Find the average of a random sequance

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Problem 44455. Find the average of a random sequance

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