data-structure
Wizard Meet-up - Find the cheapest way for Wizard level X to meet wizard level Y
April 28th, 2020 - 4 mins read
Min Stack - Design a stack that supports push, pop, top, and retrieving the minimum element in constant time
April 26th, 2020 - 4 mins read
Backspace String Compare - Given two strings S and T, return if they are equal
April 23rd, 2020 - 4 mins read
Happy Number - Write an algorithm to determine if a number n is happy
April 15th, 2020 - 4 mins read
Single Number - Given a non-empty array of integers, every element appears twice except for one. Find that single one
April 15th, 2020 - 4 mins read