$\{$

const n $=$ a$.$length;

const b $=[]$;

for $($let i $=0$; i $<$ n $/2$; i$++)\{$

b$.$push$($a$[$i$])$;

b$.$push$($a$[$n $-$ i $-1])$;

$\}$

$//$ If the input array has odd length, add the middle element to the end of the rearranged array

if $($n $\%2!==0)\{$

b$.$push$($a$[$Math$.$floor$($n $/2)])$;

$\}$

return b;

$\}$