Gelöst

Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

etwa 12 Jahre vor

Gelöst

Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

etwa 12 Jahre vor

Gelöst

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

etwa 12 Jahre vor

Gelöst

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...

etwa 12 Jahre vor

Gelöst

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

etwa 12 Jahre vor

Gelöst

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

etwa 12 Jahre vor

Gelöst

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...

etwa 12 Jahre vor

Gelöst

Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

etwa 12 Jahre vor

Beantwortet
How do you transform a vector of numbers into a cell of strings?
Hi, one possibility: Acell = num2cell(A); B = cellfun(@(x) sprintf('%g', x), Acell, 'UniformOutput', false); Titus

etwa 12 Jahre vor | 0

Beantwortet
Comparing two matrix in Matlab
Hi, this question is rather tricky to answer in general. A simple approach is to compute the relative error. That works fine ...

etwa 12 Jahre vor | 0

Beantwortet
Create this particular SPARSE matrix to solve a quadratic program
Hi, I guess this will not work. If I take a look at M for d=16, it's 256*256 and requires (converted to sparse) about 0.12MBy...

etwa 12 Jahre vor | 0

| akzeptiert

Gelöst

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...

etwa 12 Jahre vor

Gelöst

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

etwa 12 Jahre vor

Gelöst

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

etwa 12 Jahre vor

Gelöst

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

etwa 12 Jahre vor

Gelöst

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...

etwa 12 Jahre vor

Gelöst

Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

etwa 12 Jahre vor

Gelöst

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 ...

etwa 12 Jahre vor

Gelöst

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 ...

etwa 12 Jahre vor

Gelöst

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

etwa 12 Jahre vor

Gelöst

Add two numbers
Given a and b, return the sum a+b in c.

etwa 12 Jahre vor

Gelöst

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...

etwa 12 Jahre vor

Gelöst

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:...

etwa 12 Jahre vor

Beantwortet
any(cell{i}) doesn't work (loop)
Could it be that you meant to write any(a{i}<0) instead of any(a{i})<0 likewise for the others ?? Titus

etwa 12 Jahre vor | 0

| akzeptiert

Beantwortet
Basic question regarding S function
Hi Sameer, the easist would be to use a parameter for the S-Function, read the xls file in MATLAB and pass the data as parame...

etwa 12 Jahre vor | 0

| akzeptiert

Beantwortet
converting 2d matrix to 3d
HI Joe, if I'm not mistaken, it should be permute(reshape(X, 512, 140, 8), [1 3 2]); Titus

etwa 12 Jahre vor | 12

| akzeptiert

Beantwortet
Iterations are taking too long
Hi, two things to start with: * I'm missing the initialization of U: add U = zeros(nt, nz) before entering the loop (same ...

etwa 12 Jahre vor | 0

| akzeptiert

Beantwortet
How to read a large text file quickly ( exceeding 20GB)
Hi Sivanand, you will be able to read the original file using fopen and textscan, because you can use textscan in a loop to r...

etwa 12 Jahre vor | 0

Beantwortet
Mcc in Symbolic Math toolbox
Hi Sriram, it depends: do you want to continue with the symbolic expression, i.e., do you want to do some more calculations? ...

etwa 12 Jahre vor | 0

Beantwortet
Embedded Matlab Function - Output for every calculation
Hi, I think there is a misunderstanding of how this works. The MATLAB code you write is executed at each time step, completel...

etwa 12 Jahre vor | 0

| akzeptiert