How to find the second closest number?

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Yuli Hartini
Yuli Hartini 2017-1-5
回答： KSSV 2017-1-5
I have a matrix looks like this:
A = [1990;1993;1998;2001;2004 ]
And I would like to find the closest value to f=1999 (in this case the first closest value is certainly 1998), but how can I find the second closest value (2001) after I found the first value.
Thanks before
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David Goodmanson
David Goodmanson 2017-1-5
Hi Yuli, if you take abs(A-your_number) and sort it, you will get the entire list of distances. The sort command also has a second output that will show you the location of each one in the unsorted array.

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KSSV
KSSV 2017-1-5
clc; clear all ;
A = [1990;1993;1998;2001;2004 ] ;
f = 1999 ;
[val,idx] = sort(abs(f-A)) ;
A(idx)

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