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Solved
Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...
mer än 12 år ago
Solved
Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...
mer än 12 år ago
Solved
Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...
mer än 12 år ago
Solved
Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...
mer än 12 år ago
Solved
Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...
mer än 12 år ago
Solved
Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...
mer än 12 år ago
Solved
Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...
mer än 12 år ago
Solved
Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...
mer än 12 år ago
Solved
Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...
mer än 12 år ago
Solved
Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...
mer än 12 år ago
Solved
Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
nästan 13 år ago
How to find out the radius and center of unknown circle and reconstruct the circle with calculated radius.
You should have a look at the Hough transform in its general form and its application to circles in particular. It allows to det...
ungefär 13 år ago | 0
| accepted
Solved
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...
ungefär 13 år ago
Solved
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...
ungefär 13 år ago
Solved
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,...
ungefär 13 år ago
Solved
Number of Horns on a unicorn!
Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!
ungefär 13 år ago
Solved
Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...
mer än 13 år ago
Solved
Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...
mer än 13 år ago
Solved
Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...
mer än 13 år ago
Solved
Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...
mer än 13 år ago
Solved
Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...
mer än 13 år ago
[DEPRECATED] What frustrates you about MATLAB?
# I'd really appreciate improved MEX-debugging capabilities on Linux systems in regard to the user: Seriously, we're still using...
ungefär 14 år ago | 2
using matlab engine from c++: How to convert a int** into mxArray*
I didn't really get your posted code as it requires some guessing, but let me point out a few things: 1. While you might be u...
ungefär 14 år ago | 0
Convert C struct to matlab struct
I never did that in particular, but I personally consider there are three approaches: 1. Receive the byte-stream as is, but t...
ungefär 14 år ago | 0
Incorrect "Creating an instance of the Abstract class is not allowed"
|query_dev| inherits the abstract methods methods (Abstract) S = assembleStatement(obj); submitStatement(obj); ...
ungefär 14 år ago | 1
| accepted
Finding the second smallest value in each column of an array?
You could simply take advantage of Bruno Luong's <http://www.mathworks.com/matlabcentral/fileexchange/23576-minmax-selection Min...
ungefär 14 år ago | 1
dilatasi erosi ..... what it is?
See <http://en.wikipedia.org/wiki/Mathematical_morphology mathematical morphology> on Wiki.
ungefär 14 år ago | 0
