Can a hashmap have duplicate keys?
Define path in a graph?
List some applications of queue data structure.
Explain about map and their types?
What is the difference between arraylist and linkedlist?
What is a binary search tree? Explain with example?
Are data structures important?
Will it create any problem if we add elements with key as user defined object into the treemap?
What is the main advantage of a linked list?
Define leaves?
An array having 100 elements have numbers from 1 to 99 randomly out of which any number is repeated. Find the repeated number in minimum time and space complexity.
What should be done in the base case for this recursive problem?
Convert the following infix expression to post fix notation ((a+2)*(b+4)) -1