Questions related to Data structure, LinkedList, Selenium, TestNG Problem 1: for given integer array, find the maximum number which is formed using these integers i.e { 2,20,31,4,6,8} ==> 86431220 Problem 2: for a given integer array {4, 3, 5, 5, 5, 1, 3, 0, 2, 0} , Find maximum occurrence of number and sort it according to decreasing order i.e { 5=3, 3=2, 0=2, 4=1, 1=1} Question 3: write the cases for deleting an element from Singly linked list and doubly linked list Other question like write the cases for Payment Gateway etc