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SAYANTAN BHANJA
SAYANTAN BHANJA 2017-7-25
评论： SAYANTAN BHANJA 2017-7-26
Write a function called smallest_multiple that returns a uint64, the smallest positive number that is evenly divisible by all of the numbers from 1 to n where n is a positive integer scalar and is the only input argument of the function. If the result would be greater than what can be represented as a uint64, the function returns 0.
function LCM=smallest_multiple(n)
%
x=(1:1:n);
r=1;
i=1;
while(i<=length(x))
r=(lcm(r,x(i)));
i=i+1;
end
if(r>intmax('uint64'))
LCM=uint64(0);
else
LCM=uint64(r);
end
end
GIVING ERROR FOR INPUT 45 .
  2 个评论
per isakson
per isakson 2017-7-25
I cannot reproduce the error on R2016a 64bit.
LCM=smallest_multiple(45)
returns
Warning: Inputs contain values larger than the largest consecutive flint.
Result may be inaccurate.
...
LCM =
0
ES
ES 2017-7-26
What is your error? Is it about memory? What MATLAB version do you use? I have tried your script in R2014B-64 bit. It works well.

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采纳的回答

Walter Roberson
Walter Roberson 2017-7-26
Change your x and r to
x=uint64(1:1:n);
r=uint64(1);

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