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# how to store data for second looping

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aleea razali on 1 Jun 2020
Edited: Aquatris on 2 Jun 2020
Hi everybody, dataA consist of 20 'y' values.
Then, if 'diff' is more than 0.01, the code will looping back. How i can store value of dataA for each 'z loop'? Thank you.
for z=1:1000;
for i=1:20
x(i)=rand
y(i)=2x(i)+1
dataA(i,:)=y
end
diff=max(y)-min(y)
if diff<0.01
return
else
z=z+1
end
end
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### Accepted Answer

Aquatris on 1 Jun 2020
Edited: Aquatris on 2 Jun 2020
One way would be to use a 3D array for dataA variable or;
for z=1:1000
for i=1:20
x(i)=rand;
y(i)=2*x(i)+1;
end
dataA(z,:)=y;
diff=max(y)-min(y);
if diff<0.01
break;
end
end
You do not need to assign dataA to y(i) inside the loop.
You do not need to define z = z+1, "for loop" does it automatically.
Instead of return, I suggest you use break as well.
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aleea razali on 2 Jun 2020
hi, The coding works fine and the data can be save now. Thank you.

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