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...

2 months ago | 0 | 7 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...

2 months ago | 0 | 5 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...

2 months ago | 1 | 9 solvers

Solved

Simple addition
Add two numbers using a funciton

3 months 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...

3 months ago | 0 | 7 solvers

Solved

EZ9
EZ

3 months ago

Solved

EZ7
EZ

3 months ago

Solved

EZ8
EZ

3 months ago

Solved

EZ10
EZ

3 months 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...

3 months ago

Solved

EZ4

3 months ago

Solved

EZZ
EZZ

3 months ago

Solved

EZ5
EZ5

3 months ago

Solved

EZ6

3 months ago

Solved

EZ
EZ

3 months 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...

3 months 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 ...

3 months ago | 1 | 4 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...

3 months ago | 1 | 5 solvers

Solved

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

3 months 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...

4 months 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','...

4 months 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: ...

4 months 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!

4 months 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 ...

4 months ago

Solved

Decimal to Binary conversion for Large Integers

4 months ago

Solved

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

4 months 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] ...

4 months ago

Solved

Define the higher order function - foldl
Given a binary function f, a starting value a, and a list (row vector) xs of values, the higher order function foldl folds the f...

4 months ago

Solved

three digits
Input three digits no larger than 4，say 1,2 and 3, write the possible largest number composed（concatenation and power） only by t...

4 months ago

Solved

Path of least resistance
Find the length of the shortest path through the matrix from the top left to bottom right corner. You may move right, down, or d...

4 months ago