Problem


Solve an easy binary puzzle
A binary puzzle presents a square grid (or matrix) of cells in which each cell must be 0 or 1. The finished puzzle must follow t...

1 year ago | 0 | 5 solvers

Problem


Indicate how the Prague astronomical clock strikes the hours
The astronomical clock in Prague has a bell that rings 1, 2, 3, or 4 times. The number of strokes follows the sequence 123432123...

1 year ago | 0 | 6 solvers

Problem


Convert integers from base 10 to proper primary notation
This problem is the companion to Cody Problem 60782. The proper primary system of expressing numbers has three digits: m, x, and...

1 year ago | 0 | 5 solvers

Problem


Convert integers from proper primary to base 10
The proper primary system of expressing numbers has three digits: m, x, and p, which correspond to -1, 0, and 1. The places in a...

1 year ago | 0 | 11 solvers

Problem


Express integers in negabinary
Negabinary numbers are written in base -2. For example, the negabinary number 11010 is , or 6 in base 10. In a similar way, -3 i...

1 year ago | 0 | 7 solvers

Problem


Play Hocus Focus
The card game Hocus Focus starts by placing twelve cards with wizards face up on a table. The characteristics of the wizards tha...

1 year ago | 1 | 11 solvers

Solved


Simple addition
Add two numbers using a funciton

1 year ago

Problem


Complete hydraulic geometry relations
Hydraulic geometry relations express the velocity , width , and depth of a river as a function of the discharge (or flow) , whi...

1 year ago | 0 | 9 solvers

Solved


EZ9
EZ

1 year ago

Solved


EZ7
EZ

1 year ago

Solved


EZ8
EZ

1 year ago

Solved


EZ10
EZ

1 year ago

Solved


Castling-03
Given the position of different chess pieces on the chessboard, figure out whether castling is valid or not in the next move (wh...

1 year ago

Solved


EZ4

1 year ago

Solved


EZZ
EZZ

1 year ago

Solved


EZ5
EZ5

1 year ago

Solved


EZ6

1 year ago

Solved


EZ
EZ

1 year ago

Solved


String permutations on phone keyboard
Given a number such as 2639 return all possible string permutations using the phone-keyboard on Problem 1069. input = 78 outpu...

1 year ago

Problem


Identify points inside a Reuleaux triangle
Write a function to identify points that lie in or on a Realeaux triangle, which is a curve of constant width. The input to the ...

1 year ago | 1 | 7 solvers

Problem


Determine whether a number is a Ludic prime
Ludic numbers are formed by a sieve. Start with a list of the positive integers. Skip 1 and start with 2. Then delete every seco...

1 year ago | 1 | 8 solvers

Solved


Forward Elimination for Gauss Elimination
Perform forward elimination for a given pivot column in the augmented matrix, Ab=[A,b]

1 year ago

Solved


Generate Hadamard Matrix without using hadamard function
In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are e...

1 year ago

Solved


2048 Next Move
Given a board in the game 2048 (see the game here: <http://gabrielecirulli.github.io/2048/ 2048>) and a direction ('up','down','...

1 year ago

Solved


Combinations using Stirling numbers of the second kind
Output the number of ways to distribute n labelled balls among k identical boxes (some of which might be empty). Example: ...

1 year ago

Solved


Our Dad went to Buy a car But the car seller can't think the easiest way to get the car out Give Him a solution!

1 year ago

Solved


Given Hypotenuse points create two right triangles
Given two points defining a hypotenuse create two right triangles of (h,5,R). Return the two (x,y) points that create the right ...

1 year ago

Solved


Decimal to Binary conversion for Large Integers

1 year ago

Solved


switch base
Input an integer, switch its base. Input is a string, so is output.

1 year ago

Solved


Sample from random roulette
Given a list of values and their probabilities sample 10,000 values. Example: x = [1 2 3 4 5]; prob = [0.2 0.1 0.4 0.1 0.2] ...

1 year ago

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