Hello! Im a bit stuck on this practice problem so if anyone could help with it then thank you Exercise $3$: Add to class Vector$20$ an insert$()$ function. Given an index $($target$)$ and a new value $($x$),$ the insert function is to insert the stated value at the stated index. You will develop this function yourself.

Design and then implement the algorithm that accomplishes the insertion. Your function will

have three important stages:

$(1)$ Add a copy of the last $($back$)$ element of the vector with push$\_$back.

$(2)$ Beginning at index theSize $-2$ and ending at the target index, copy each element to the

next index $(+1).$

$(3)$ Place the new value x at the target index.