Problem 55240. Calculate the mean of each half of a matrix

• Created by Matt Tearle
• Appears in Cody Problems in Japanese

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Given a matrix with an even number of columns, n, return a 1-by-2 row vector where the first element is the mean of all the elements in the first n/2 columns, and the second element is the mean of all the elements in the second n/2 columns.

For example

A = [3 4 4 3;

1 2 5 3;

1 1 4 5];

m = halfmeans(A)

m =

2 4

(2 = mean of [3,4,1,2,1,1], 4 = mean of [4,3,5,3,4,5])

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52.54% Correct | 47.46% Incorrect

• 1081 Solutions
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Last Solution submitted on Mar 03, 2025

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