How can i populate an array using a for loop?

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Nathan Poll
Nathan Poll 2014-12-5
回答： Azzi Abdelmalek 2014-12-6
I need to create a 1D array of n elements. The array needs to be populated with a different random number in each element using a for loop. So far, I have:
prompt = 'Enter a value for n:' ; n = input(prompt); for i = 1:n A(1,i) = rand end
It's not quite working right. Any tips?

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回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2014-12-6
You have just to pre-allocate before the loop
A=zeros(1,n)

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