Reverse an array by for loop
36 views (last 30 days)
Show older comments
Hi i got this array : a=[1 2 3 4 5] and i want to reverse it by for loop so it will be a=[5 4 3 2 1]
Thanks
0 Comments
Accepted Answer
Wayne King
on 10 Oct 2012
Why a for loop?
a = [1 2 3 4 5] ;
b = fliplr(a);
If you must with a for loop
for ii = 1:length(a)
b(ii) = a(length(a)-ii+1);
end
3 Comments
Wayne King
on 10 Oct 2012
a = [1 2 3 4 5] ;
for ii = 1:length(a)
b(ii) = a(length(a)-ii+1);
end
It absolutely works. Just copy and paste the entire code snippet above into the command window.
More Answers (2)
Matt Fig
on 10 Oct 2012
An in-place FOR loop would look like:
a = 1:10;
L = length(a);
for ii = 1:L/2
T = a(L-ii+1);
a(L-ii+1) = a(ii);
a(ii) = T;
end
2 Comments
Matt Fig
on 10 Oct 2012
You need to read the "Getting Started" section of the documentation. Copy-paste the code I gave into the command window and it will reverse the elements of a. Nothing is wrong, you just didn't look at a after the code ran!! To look at the result, type:
a
at the command window.....
See Also
Categories
Find more on Loops and Conditional Statements in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!