how do i create a recursive function that gives the number of digits in an integer? i.e. does the same that length function does in MATLAB

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Zaza
Zaza 2013-3-30
function r = length_of(n)
end
it seems to be easy but right now i'm stuck with it

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Cedric
Cedric 2013-3-30
编辑：Cedric 2013-3-30
As Wayne mentioned, recursivity in unnecessary, but if you had to implement a recursive function, you could have built something like:
function r = length_of(n)
if n < 10
r = 1 ;
else
r = 1 + length_of(n/10) ;
end
end

更多回答（1 个）

Wayne King
Wayne King 2013-3-30
Why recursive?
A = 12;
B = 1000;
length(num2str(A))
length(num2str(B))

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