Gelöst

Angle between Two Vectors
The dot product relationship, a dot b = | a | | b | cos(theta), can be used to determine the acute angle between vector a and ve...

etwa 14 Jahre vor

Gelöst

Remove NaN ?
input -> matrix (n*m) with at least one element equal to NaN; output -> matrix(p*m), the same matrix where we deleted the enti...

etwa 14 Jahre vor

Gelöst

Make blocks of color
Given a (Nx3) sequence of RGB colors, I want to create a (numRowBlocks x numColBlocks x 3) image comprising (blockSize x blockSi...

etwa 14 Jahre vor

Gelöst

Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

etwa 14 Jahre vor

Gelöst

Nilpotent matrix
Check if matrix A is <http://mathworks.com/ nilpotent>.

etwa 14 Jahre vor

Gelöst

Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

etwa 14 Jahre vor

Gelöst

Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

etwa 14 Jahre vor

Gelöst

Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

etwa 14 Jahre vor

Gelöst

surrounded matrix
With a given matrix A (size m x n) create a matrix B (size m+2 x n+2) so that the matrix A is surrounded by ones: A = [1 2 ...

etwa 14 Jahre vor

Gelöst

Hackathon: the beginnings
I am thinking of a number between 1 and 10000... can you guess what this number is? *Description* The test suite has rando...

etwa 14 Jahre vor

Gelöst

More luck than brains
Give a random function that guess and return numbers from 1 to 6 exactly like the test suite .

etwa 14 Jahre vor

Gelöst

Create a patchwork matrix
This function will assemble a large matrix out of a number of smaller ones m1, m2, etc., according to a pattern P. If P is 3x5,...

etwa 14 Jahre vor

Gelöst

Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

etwa 14 Jahre vor

Gelöst

Multiply to the limit?
If y = 4*x*x/pi/pi then what is the ultimate limiting result of (1+y/1/1)(1+y/3/3)(1+y/5/5)(1+y/7/7)... ... within 1000*eps?

etwa 14 Jahre vor

Gelöst

middleAsColumn: Return all but first and last element as a column vector
Given input A, return all but the first and last elements, arranged as a column vector. (I.e., all dimensions after the first s...

etwa 14 Jahre vor

Gelöst

Wind outward from the center ...
Create an n-by-n matrix with elements ranging from 1 to n^2 in a rectangular spiral pattern. Example if n = 5 : 21 ...

etwa 14 Jahre vor

Gelöst

Return elements unique to either input
Given two numeric inputs a and b, return a row vector that contains the numbers found in only a or only b, but not both. For ex...

etwa 14 Jahre vor

Gelöst

Make one big string out of two smaller strings
If you have two small strings, like 'a' and 'b', return them put together like 'ab'. 'a' and 'b' => 'ab' For extra ...

etwa 14 Jahre vor

Gelöst

capable husband?
* The prospective husband must pass a background check, * and *functions* faithfully, as suggested by <http://www.mathworks.com...

etwa 14 Jahre vor

Gelöst

Find perfect placement of non-rotating dominoes (easier)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

etwa 14 Jahre vor

Gelöst

Scoring for oriented dominoes
Given a list of ordered pairs, and the order they should be placed in a line, find the sum of the absolute values of the differe...

etwa 14 Jahre vor

Gelöst

Sums with Excluded Digits
Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

etwa 14 Jahre vor

Gelöst

Return a list sorted by number of occurrences
Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

etwa 14 Jahre vor

Gelöst

Sum of first n terms of a harmonic progression
Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....

etwa 14 Jahre vor

Gelöst

Mersenne Primes
A Mersenne prime is a prime number of the form M = 2^p - 1, where p is another prime number. For example, 31 is a Mersenne prim...

etwa 14 Jahre vor

Gelöst

Find the jerk
No, it's not the author of this problem... Jerk is the rate of change in acceleration over time of an object. So, if given t...

etwa 14 Jahre vor

Gelöst

count any radix?
given radix r(2-9), digts d(1-4), give all possible strings in sorted order. for example, if r=2, d=2, then output {'00' '01' '1...

etwa 14 Jahre vor

Gelöst

Pull the variable y_correct from the Caller's Workspace
*Description* This highlights a very easy to use and high-scoring cheat that can be used on almost all Cody questions.

etwa 14 Jahre vor

Gelöst

Circumscribed circles
Given the lengths of the 3 sides of a triangle, output the radius of the circumscribed circle. Example: [3 4 5] -> 2.5

etwa 14 Jahre vor

Gelöst

Balanced number
Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

etwa 14 Jahre vor