Re: (newbie) Find Max Number In An Array

Nektarios - Greece wrote:
<snip>

X Y
--------
25 0.571
26 0.555
27 0.534
28 0.530
29 0.535
30 0.541
etc

You can use a variant of Newton's approximation for roots of an
equation.

You can readily find the value of an integer for which Y is the
"minimum by integer". As you do that store the values for X and Y for
the values of X BEFORE that, and also store the values of X and Y AFTER
that one.

Lets call the values BEFORE the integer minimum X[L] and Y[L], the
values at the integer minimum X[M] and Y[M], and the values AFTER the
integer minimum X[N] and Y[N].

Then a better value for XMin is ...

X[M] - ( (Y[N] - Y[L]) / (2(Y[L] + Y[N] - (Y[M] * 2))) )

.... or in the example 28 - 0.055 =~ 27.95

Alan Lloyd

.

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