How to find X value of given Y close to zero ?

How to find the value of Y more close to zero first (note Y consists of both positive and negative numbers) and then find the corresponding X value ? Many thanks in advance.

Lets say I have X and Y given by

X=[-51 -41 -31 -21 -11 1 11 21 31 41]
Y=[0.003 -0.002 0.004 0.0002 -0.05 0.0003 -0.001 0.006 0.01 0.0012]

[Stephen23]

What is the expected output from this example data?

[Prince Alex]

Y is 0.0002 and corresponding X value is -21. I jus given an example, I have a bit data set having 90k points and from that I have to find the Y value more close to zero and corresponding X value. Thank you.

Answer 1

[KSSV]

[val,idx] = sort(abs(Y)) ; 
Y(idx)
X(idx)

[Prince Alex]

Thank you. It worked.