Write a procedure labeled append: that will copy two arrays in memory into a single array. Arguments are as follows:

x$0$: length of first array

x$1$: address of first element of the first array

x$2$: length of the second array

x$3$: address of first element of the second array

x$4$: address at which to write the array. Guaranteed to be able to hold x$0+$x$2$ elements.

$****$You can't use MUL or LSL$.$ Also make sure you test the function and every edge case