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William


Last seen: Today
4.738 total contributions since 2012

Semi-retired physicist with interests in numerical modeling and mathematics.

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Solved


Compression: Encode and Decode
This Challenge is to compress an array created by randi(2^32-1,1000) and then decompress your data file. The first call will ...

circa 10 ore ago

Solved


List Proth primes

circa 14 ore ago

Solved


Spiraling out of control....
Imagine a square with corners at the origin and at (1,1). An interesting spiral can be created by tracing the path of a moving ...

1 giorno ago

Solved


How many ways to write
How many ways to write a positive integer x as the sum of n numbers , where , x>n and no n number is less than -2.

1 giorno ago

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Flip coins

2 giorni ago

Solved


Portfolio diversification: choose your stocks !
we have the returns of 3 stocks for the last 4 years and we have to combine only 2 stocks that are less correlated. Example: ...

2 giorni ago

Solved


USC Fall 2012 ACM: Driving the Rover
This Challenge is to solve Question E, Driving the Rover, of the <http://contest.usc.edu/index.php/Fall12/Home USC ACM Fall 2012...

2 giorni ago

Solved


Persistence will not help you solve this problem.
Create a function without inputs that adds one to the output every time it is called. A different possibility of solving this ha...

3 giorni ago

Solved


Spell the number
Using the British short scale notation, write a function to return the correct spelling of a number passed as a numeric string i...

3 giorni ago

Solved


Solve an ODE: equation A

3 giorni ago

Solved


Flip the matrix as -

4 giorni ago

Solved


Determine if input is even

9 giorni ago

Solved


Apply Function to Each Field of a Structure Array: Part 1
The builtin <http://www.mathworks.com/help/matlab/ref/structfun.html?=structfun structfun> applies a function handle to each fie...

9 giorni ago

Solved


Add 100

10 giorni ago

Solved


Similar triangles

13 giorni ago

Solved


Solve an ODE: diffusion problem 2

13 giorni ago

Solved


Highest building

13 giorni ago

Solved


Digits Multiplication

13 giorni ago

Solved


Normalizing a vector

13 giorni ago

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End Digits

13 giorni ago

Solved


Min-Max digit

13 giorni ago

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Do you have the minimum age?

14 giorni ago

Solved


The tallest man in the world

15 giorni ago

Solved


Graph Algorithms - 1 : Length of the largest closed path
An undirected simple graph is given as the form of an adjacency matrix. Find the length of the largest closed path (one that sta...

15 giorni ago

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