# Hewlett-Packard

Hewlett-Packard (HP)

Medium

30 minutes

# Height Balanced Binary Tree

Given a pointer to the root node of a binary tree, return true if the binary tree is height-balanced. A height-balanced binary tree is a Binary tree i...

Medium

30 minutes

# Spiral Traversal

Given a 2D matrix of numbers, return a spiral traversal of the matrix in the clockwise direction.

Easy

30 minutes

# String Compression

Given a string of alphabets (from a to z), Print the count of the character appearing in the string right next to it. This is also called Run Length E...