Write a method called interleave that accepts two ArrayLists of integers a1 and a2 as parameters and inserts the elements of a2 into a1 at alternating indexes. If the lists are of unequal length, the ...

Differences between Arrays and ArrayLists. In Java, arrays are used to store multiple items of the same type in one place. They have a fixed size, meaning you decide how many items they can hold when ...