One Mile South
How many places are there on the earth that one could walk one mile south, then one mile east, then […]
Brain Teasers
Algorithms, Math Problems, Recursion, String Manipulation
Cube
This is difficult to describe in words, so read this carefully, lest there be any confusion. You have a normal
Logic Puzzles
More Hat Puzzles
I buried four fishermen up to their necks in the sand on the beach at low tide for keeping their
Logic Puzzles
Coin on a Table
You die and the devil says he’ll let you go to heaven if you beat him in a game. the
Math Problems
Noodles
There is a pot of N noodles. (so there are 2N ends). A person randomly grabs two ends and merges
Algorithms, Logic Puzzles, Math Problems
Heaven
A person dies, and arrives at the gate to heaven. there are three doors. one of them leads to heaven.
Brain Teasers, Logic Puzzles
Flipping Coins
Someone walks into your room and dumps a huge bag of quarters all over the floor. They spread them out
Logic Puzzles
Pennies
I challenge you to a game. we each get one penny and we flip them at the same time. (so
Brain Teasers, Data Structures, Logic Puzzles, Microsoft Interview Questions
Linked List
How does one find a loop in a singly linked list in O(n) time using constant memory? You cannot modify
Coding Interview Questions
Last Ball
You have 20 blue balls and 14 red balls in a bag. you put your hand in and remove 2
Algorithms, Logic Puzzles, Math Problems
Coin Rolls
Every night, I dump all the change in my pocket into a big bucket. When I buy things, I never
Coding Interview Questions
Calendar Cubes
A man has two cubes on his desk. every day he arranges both cubes so that the front faces show
Coding Interview Questions
Boys and Girls
In a country in which people only want boys, every family continues to have children until they have a boy.
Brain Teasers, Logic Puzzles
Painfully Easy
I flip a penny and a dime and hide the result from you. “one of the coins came up heads”,
Coding Interview Questions
Nuggets
You can go to a fast food restaurant to buy chicken nuggets in 6-pack, 9-pack or 20-packs. is there such