How to create an an array of unknown size?

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Preetam Pal 2015-8-15

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评论： per isakson 2015-8-16

Say, I have an array A of size 100 consisting of 0's and 1's. I need to create a smaller array consisting only of the 1's. At start, I don't know the number of 1's in the original array. Basically, I want to create the subset-array element-by-element as I loop over the elements of the original array and checking for 1's.Any help appreciated. Thanks, Preetam

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per isakson 2015-8-16

"create the subset-array element-by-element as I loop over the elements " &nbsp is that a requirement or a hint?

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Answer 1

Star Strider 2015-8-15

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I’m not quite sure what you want.

Here are two possibilities:

Array = randi([0 1], 1, 100);
OnesArray = Array(Array==1)             % Ones Array
ElemArray = find(Array);                % Indices Of Ones In ‘Array’