How to arrange the coins into two groups, each with the same number of heads and tails?
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There are ten coins in front of you. You are blind folded. You can flip each coin any number of times but there is no way to tell if a coin is a heads or tails. Coins start with 5 heads and 5 tails.
Spli...
9 Minutes Problem
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Hints
... Solution:
Rules: You can use add, subtract, multiply, divide, and parentheses.
Bonus Rules: you are also allowed to use logarithms, factorials, and roots ...
Solution 1.
8/(3-(8/3))
= 8/(1/3)
= 24
Solution 2.
((8 x 3!...
Dominos:
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Given an int N, the length of a square chess board, return a boolean telling if it is possible to arrange N queens on the board without any being able to attack each other. If true, print the board using a given function printBoard(int[][] A). Boolean solveBoard(int N)
Hints
You have 1000 bottles of soda, and exactly one is poisoned. You have 10 test strips, which can be used to detect poison. A single of posion will turn the test strip positive permanently. You can put any number of drops on a test strip at once and you can reuse a test strip as many times as you'd li...