Gelöst

Rotate and display numbered tile
Imagine a square tile with four numbers on it, one on each edge. We will call these edges north, east, south, and west. If th...

fast 14 Jahre vor

Gelöst

Find best placement for ordered dominoes (harder)
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...

fast 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...

fast 14 Jahre vor

Gelöst

Stuff the Board
You have a stack of tiles to put onto an array-like playing board. Each tile has a number (always an integer), and the board var...

fast 14 Jahre vor

Gelöst

Duplicate each element of a vector.
for an n-dimensional vector x, the function should return another vector 2n-dimension which each element is repeated twice. Ex...

etwa 14 Jahre vor

Gelöst

Replace Vector Elements
Replace all elements in a vector which are equal to or smaller than zero with 0.1. Example: A = [1 2 3 -1 0 2 -3 -80]; ...

etwa 14 Jahre vor

Gelöst

Least common multiple of many numbers
1:6 -> 60

etwa 14 Jahre vor

Gelöst

We love vectorized solutions. Problem 1 : remove the row average.
Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...

etwa 14 Jahre vor

Gelöst

Multiply 2 numbers
Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, pro...

etwa 14 Jahre vor

Gelöst

Fastest shortest-path-finder in the west
Given connectivity information about a graph, your job is to find the <http://en.wikipedia.org/wiki/Shortest_path_problem *short...

etwa 14 Jahre vor

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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

Set a diagonal
Given a matrix M, row vector v of appropriate length, and diagonal index d (where 0 indicates the main diagonal and off-diagonal...

etwa 14 Jahre vor

Gelöst

Back to basics 25 - Valid variable names
Covering some basic topics I haven't seen elsewhere on Cody. Given a string, return true if it is a valid MATLAB variable nam...

etwa 14 Jahre vor

Gelöst

Back to basics 26 - Keywords
Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of strings of all MATLAB keywords.

etwa 14 Jahre vor

Gelöst

Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

etwa 14 Jahre vor

Gelöst

Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

etwa 14 Jahre vor

Gelöst

Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

etwa 14 Jahre vor

Gelöst

Back to basics 13 - Input variables
Covering some basic topics I haven't seen elsewhere on Cody. Return as a string the name of the input variable to the functio...

etwa 14 Jahre vor

Gelöst

Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

etwa 14 Jahre vor

Gelöst

Permute diagonal and antidiagonal
Permute diagonal and antidiagonal For example [1 2 3;4 5 6;7 8 9] -> [3 2 1;4 5 6;9 8 7] WITHOUT diag function (and variable n...

etwa 14 Jahre vor

Gelöst

newRMS
find root mean square of a signal x in less time than the test code and accurate to six places.

etwa 14 Jahre vor

Gelöst

peta to nano (x-ray)
for certain x-ray radiation, given frequency in petahertz, give wavelength in nanometer, must be accurate +/- 25%

etwa 14 Jahre vor

Gelöst

Multiply a column by a row
* Given a column vector C and and a row vector R. * Output a matrix M. * Every column of M equals to C multiplied by correspon...

etwa 14 Jahre vor

Gelöst

Generate N equally spaced intervals between -L and L
Given N and L, return a list of numbers (in ascending order) that divides the interval [-L L] into N equal-length segments. F...

etwa 14 Jahre vor

Gelöst

DC chopper
Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then...

etwa 14 Jahre vor

Gelöst

Vectorize the digits of an Integer
Create a vector of length N for an integer of N digits. x=123045; x_vec=[1 2 3 0 4 5]; I happened upon a trick to do ...

etwa 14 Jahre vor

Gelöst

Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

etwa 14 Jahre vor

Gelöst

Arrange vector in ascending order
Arrange a given vector in ascending order. input = [4 5 1 2 9]; output = [1 2 4 5 9];

etwa 14 Jahre vor

Gelöst

Flip the main diagonal of a matrix
Given a n x n matrix, M, flip its main diagonal. Example: >> M=magic(5); >> flipDiagonal(M) 9 24 1 ...

etwa 14 Jahre vor

Gelöst

Create a cell array out of a struct
Create a cell array out of a (single) struct with the fieldname in the first column and the value in the second column: in: ...

etwa 14 Jahre vor