a string and i want to recognize a complex polynomial in that string and if for example if the user inputs the folloing string
(1+i)x^3 +(5i)x^2 +(3+5i)x +5
(each cell in the complex number array consists of a real number and emaginary) the function will put in cell 3 the value 1 in the real part of cell 3 and 1 in the imaginary part of cell 3.
in cell 2 it will put 0 in the real part of cell 2 and 5 in the complex part of cell 2
etc...
is there a way for me to make this function??
another questiob if i got a string ================= a=\b =============== for wich the user puts values for a and b i want to make the following operation on the
t=a.divide(b)
how do i build a mechanism that recognises this pattern??
Joanne Neal
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Joined: Aug 05, 2005
Posts: 3011
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There are a number of 3rd party libraries for parsing maths expressions. I've never used any, so can't recommend anything, but if you Google 'java math parser' you can take a look at a few and see if any meet your needs.
Joanne
johny doe
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Joined: Dec 07, 2007
Posts: 78
posted
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i coundnt find the thing iwas looking for can you be more specific please
Originally posted by johny doe: i coundnt find the thing iwas looking for can you be more specific please
I followed Joanne's instructions, and typed "java math parser" into google. But let me check.... Yup, the first hit claims that it supports complex numbers too.
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I agree. Here's the link: http://ej-technologies/jprofiler - if it wasn't for jprofiler, we would need to
run our stuff on 16 servers instead of 3.
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