Pepperfry QA Engineer Interview Questions and Answers

ArrayList is a resizable array implementation, LinkedList is a doubly linked list implementation.

• ArrayList uses dynamic array to store elements, LinkedList uses nodes with pointers to next and previous nodes.

• ArrayList is faster for random access, LinkedList is faster for insertions and deletions in the middle of the list.

• Example: ArrayList arrList = new ArrayList<>(); LinkedList linkedList = new LinkedList<>();