Reversal algorithm for array rotation Write a function rotate(arr[], d, n) that rotates arr[] of size n by d elements. ...

Hiding of Class Variables   class Point { static int x = 2; } class Test extends Point { static double x =...

Why an outer Java class can’t be private or protected As soon as we try to use private or protected keyword while declaring an outer ...

Iterative Method to find Height of Binary Tree There are two conventions to define height of Binary Tree 1) Number of n...

Find all possible interpretations of an array of digits Consider a coding system for alphabets to integers where ‘a’ is...

Tree Isomorphism Problem Write a function to detect if two trees are isomorphic. Two trees are called isomorphic if one ...

Reverse Level Order Traversal We have discussed level order traversal of a post in previous post. The idea is to print...

Ternary Search Trees (Advanced concept explanation) When you have to store a set of strings, what data structure do you use? Jon and Rob...