问题

List the first of three consecutive square-free numbers
The numbers 13, 14, and 15 are consecutive, of course, but they also share the property of being square-free. That is, each numb...

1 year 前 | 0 | 6 个解题者

问题

Count the primes resulting from changing one digit of a number
If you start with the number 24 and seek primes by changing a single digit, you can find two: 23 and 29. If you start with 130, ...

1 year 前 | 1 | 7 个解题者

已解决

GJam March 2016 IOW: Password Single
This Challenge is derived from <http://code.google.com/codejam/contest/8274486/dashboard#s=p3 GJam March 2016 Annual I/O for Pas...

1 year 前

问题

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 前 | 0 | 4 个解题者

问题

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 前 | 0 | 5 个解题者

问题

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 前 | 0 | 4 个解题者

问题

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 前 | 0 | 10 个解题者

问题

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 前 | 0 | 6 个解题者

问题

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 前 | 1 | 10 个解题者

已解决

Simple addition
Add two numbers using a funciton

1 year 前

问题

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 前 | 0 | 8 个解题者

已解决

EZ9
EZ

1 year 前

已解决

EZ7
EZ

1 year 前

已解决

EZ8
EZ

1 year 前

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EZ10
EZ

1 year 前

已解决

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 前

已解决

EZ4

1 year 前

已解决

EZZ
EZZ

1 year 前

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EZ5
EZ5

1 year 前

已解决

EZ6

1 year 前

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EZ
EZ

1 year 前

已解决

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 前

问题

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 前 | 1 | 6 个解题者

问题

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 前 | 1 | 7 个解题者

已解决

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

1 year 前

已解决

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 前

已解决

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 前

已解决

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 前

已解决

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 前

已解决

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 前