Top 25 Frequently Asked Interview Questions in Technical Rounds Improve Improve Like Article Like Save Share Report Here is the collection of the TOP 25 frequently asked questions based on the experience of interviews in multiple companies. 1 Lowest common Ancestor 2 An unsorted array of integers is given; you must find the max product formed by multiplying three numbers. (You cannot sort the array, watch out when there are negative numbers) 3 Left View of a tree 4 Reversing of Arrays 5 Cache Line, Cache internal concept, RR scheduling 6 Print the middle of a given linked list 7 Pair-wise swap of elements in a linked list 8 HashMap internals 9 Double checking Singleton 10 Factory Pattern 11 Print a given matrix in spiral form 12 DFS on Graph and its representation 13 Object-Oriented concept 14 Print nth last node in the linked list 15 Delete a given node in Linked List under the given constraints 16 Implement Stack using Queues 17 Find if two rectangles overlap 18 Multithreading concepts 19 Given an array of integers, update the index with the multiplication of previous and next integers. 20 Difference between creating threads in Java using Thread and Runnable 21 How HashSet is implemented in Java internally. 22 DeadLock example code (Producer & Consumer Problem) 23 Find the number which is not repeated in an Array of integers, others are present two times. (Non-Repeating Element) 24 Serialization and related concepts. 25 Comparators in TreeSet Last Updated : 12 May, 2023 Like Article Save Article Previous Array Sum Next Replace every array element by multiplication of previous and next Share your thoughts in the comments Add Your Comment Please Login to comment...