$(100$p$)$ Calculate the cross correlation sequence of the following sequences in the case of time delay

is between $-3$ and $3.$ Note that, you have to use correlation formula.

$x(n)=\{...\mathrm{.}0,0,2,-1,3,7,1,2,-3,0,0....\}$

$y(n)=\{...\mathrm{.}0,0,1,-1,2,-2,4,1,-2,5,0,0....\}$