How to reverse a number?

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Jessica
Jessica 2014-11-18
回答： saurabh jare 2023-3-7
Hi,
I want to reverse a number without using MATLAB functions "digitrevorder()" and "fliplr()". Please help. Thank you!

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回答（3 个）

Evan
Evan 2014-11-18
x = 1234;
s = num2str(x) - '0';
xr = polyval(s(end:-1:1),10)
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John D'Errico
John D'Errico 2014-11-18
编辑：John D'Errico 2014-11-18
A moderately interesting question is to find a solution in one line, without needing to form an intermediate variable. (And without the application of fliplr!) Seems trivial with that function.
Guillaume
Guillaume 2014-11-18
编辑：Guillaume 2014-11-18
You also want to disallow rot90, flipud and flip, otherwise it's also trivial.

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Syed Haider
Syed Haider 2014-11-18
A = [1 2 3 4; 5 6 7 8];
y = A(:,end:-1:1)
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Syed Haider
Syed Haider 2014-11-18
Yeah you are right :) I am sorry. Should i remove the answer? or may be it will be helpful for someone.
John D'Errico
John D'Errico 2014-11-18
I don't see any reason to remove it.

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saurabh jare
saurabh jare 2023-3-7
function ran=reverse_number(x)
%x=input('Enter the value for checking the palindromic= \n');
check=x;
ran=0;
while (check~=0)
ran=(ran*10)+mod(check,10);
check=fix(check/10);
end

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