Determine if a string has all unique characters
Problem Implement an algorithm to determine if a string has all the characters…
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Binary Search Tree (BST) Data Structure
A Binary Search tree (BST) is a data structure which has two children nodes…
Binary Tree Data Structure
A Binary tree is a data structure which has two children nodes attached to it…
How to calculate First Common Ancestor of two Nodes in Binary Tree
First try to understand question. Its a binary tree, not a binary search tree…
How to calculate angle between hour and minute hand, given a time
This problem is a simple mathematical calculation. Lets start deriving some…