Solved

I've got the power! (Inspired by Project Euler problem 29)
Consider all integer combinations of a^b and b^a for the integer values 2 ≤ a ≤ 4 and 2 ≤ b ≤ 5: 2^2=4, 2^3=8, 2^4=16,...

13 years ago

Solved

Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
If _p_ is the perimeter of a right angle triangle with integral length sides, { _a_, _b_, _c_ }, there are exactly three solutio...

13 years ago

Problem

Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
If _p_ is the perimeter of a right angle triangle with integral length sides, { _a_, _b_, _c_ }, there are exactly three solutio...

13 years ago | 37 | 2141 solvers

Solved

USC Fall 2012 ACM : Find Largest Water Concentration
This Challenge is to solve Question B, Water?, of the <http://contest.usc.edu/index.php/Fall12/Home USC ACM Fall 2012 Contest>. ...

13 years ago

Solved

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

13 years ago

Solved

Design matrix from eigenvalues
Write a function that takes one input argument n and outputs a (n x n) square matrix A with the following properties: -A has...

13 years ago

Solved

Convert a substructure reference string into a valid definition structure for subsref and subsasgn
You have a reference to an element in a data structure, which you want to pass to a function. Not the value itself, but the refe...

13 years ago

Solved

TRON strategy toggle
Detect whether your lightcycle is on same side of existing walls as opponents lightcycle. This function is useful in toggling a...

13 years ago

Solved

Pentago: find winning move
<http://en.wikipedia.org/wiki/Pentago Pentago> is a challenging two-player strategy game. The objective is to be the first playe...

13 years ago

Solved

Find the repeating decimal pattern!
Write a function that takes one double input value and returns only the repeating decimal, if any, as a string. Only decimals f...

13 years ago

Solved

Borderline Connectivity
Compute the connected components of pixel borders. Suppose that h and v together describe a logical labeling of the borders b...

13 years ago

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Index of neighbor pixel with steepest gradient
Unlike in various applications, where the gradient of a two dimensional matrix is calculated in x and y direction, the gradient ...

13 years ago

Solved

Some Assembly Required
The input to this function is a matrix of real numbers. Your job is to assemble the rows of the matrix into one large row that ...

13 years ago

Solved

Image Processing 2.1.1 Planck Integral
Integrate the Planck function in Lambda (um) at T (K) accurately and quickly to find Radiance for a Lambertian source. Planck...

13 years ago

Solved

Make a KITT-scanner on the command line
Did you know that you can actually remove characters from the command-line window? Just send a 'backspace' character to the outp...

13 years ago

Solved

USC Fall 2012 ACM : Code Word Minimum Flipped Bits
This Challenge is to solve Question A of the <http://contest.usc.edu/index.php/Fall12/Home USC ACM Fall 2012 Contest>. Given ...

13 years ago

Solved

USC Fall 2012 ACM Question A : Read Input File
This Challenge is to read the Question A input text file of the <http://contest.usc.edu/index.php/Fall12/Home USC ACM Fall 2012 ...

13 years ago

Solved

Circular Primes (based on Project Euler, problem 35)
The number, 197, is called a circular prime because all rotations of the digits: 197, 971, and 719, are themselves prime. The...

13 years ago

Solved

Largest Twin Primes
<http://en.wikipedia.org/wiki/Twin_prime Twin primes> are primes p1, p2 = p1 + 2 such that both p1 and p2 are prime numbers. Giv...

13 years ago

Solved

Criss_Cross_000 : Unique elements in a Square array
Criss Cross matrix puzzle - Easy: Square matrix, Unique elements Arrange the "words" into a solid square such that all words ...

13 years ago

Problem

Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Given a number _n_, return the terminal value of the number chain formed by summing the square of the digits. According to the P...

13 years ago | 1 | 266 solvers

Problem

Next Higher Power of B
|Given a number _n_ and a base _B_ greater than 1, return the lowest integer power of _B_ that is greater than or equal to _n_. ...

13 years ago | 0 | 151 solvers

Problem

Next Lower Power of B
Given a number _n_ and a base _B_ greater than 1, return the lowest integer power of _B_ that is less than or equal to _n_. E...

13 years ago | 1 | 108 solvers

Problem

Guess the Coefficients!
Given a polynomial _p_ known to have positive integer coefficients, deduce the values of the coefficients. For example: ...

13 years ago | 2 | 37 solvers

Problem

The Dark Side of the Die
It is well-known that opposite sides of a classic hexahedral die add to 7. Given a vector of dice rolls, calculate the sum of th...

13 years ago | 2 | 144 solvers

Solved

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

13 years ago

Solved

Knots Contest: Minimum Knots (TestSuite)
This Challenge is to Minimize the number of Knots for the <http://www.mathworks.com/matlabcentral/contest/contests/38/rules Knot...

13 years ago

Solved

Create logical matrix with a specific row and column sums
Given two numbers *|n|* and *|s|*, build an |n-by-n| logical matrix (of only zeros and ones), such that both the row sums and th...

13 years ago

Problem

Lychrel Number Test (Inspired by Project Euler Problem 55)
The task for this problem is to create a function that takes a number _n_ and tests if it might be a Lychrel number. This is, re...

13 years ago | 1 | 116 solvers

Problem

Test if two numbers have the same digits
Given two integers _x1_ and _x2_, return |true| if the numbers written with no leading zeros contain the same digits. That is, t...

13 years ago | 1 | 267 solvers