How to Compute the Greatest Common Divisor of Strings?
For strings S and T, we say “T divides S” if and only if S = T + … + T (T concatenated with itself 1 or more times) …
Author: ACMer
Facebook Onsite Interview Preparation Part 3: How to Ace a Design Interview?
July 7, 2019
Engineering, facebook, interview questions, interviews, Software Engineering
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The Facebook Onsite Interview will generally consist of three parts: Motivations, and Part 2 Coding/Algorithm, and Part 3 Product Design. This is the Part Three: Design. The so-called Design …
How to Delete Nodes from Binary Tree and Make a Forest?
Given the root of a binary tree, each node in the tree has a distinct value. After deleting all nodes with a value in to_delete, we are left with …
Count the Binary Watch Stats using Bruteforce Algorithm via C++ BitSet or Compiler Intrinsics __builtin_popcount
A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom represent the minutes (0-59). Each LED represents a …
How to Design a Tic-Tac-Toe Game?
Design a Tic-tac-toe game that is played between two players on a n x n grid. You may assume the following rules: A move is guaranteed to be valid …