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Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.

約5年前

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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.

約5年前

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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...

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Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

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

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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...

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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...

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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....

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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...

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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,...

約5年前

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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...

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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 = ...

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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]; ...

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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]

約5年前

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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...

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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...

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Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

約5年前

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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...

約5年前

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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...

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Return area of square
Side of square=input=a Area=output=b

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

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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 ...

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using genetic algorithm optimizer to figure out points that satisfy the imposed constraints
There are couple reasons that you could be getting this error. - This error occurs when the objective function produces a NaN...

7年以上前 | 0

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How to import data from multiple GUIS to the main GUI?
Depending on how your GUIs are stored, you can share the variable "x" or "m" between GUIs using one of the methods at the follow...

7年以上前 | 0

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The conv layer in CNN uses different filters for activation maps but if all the weghits are same for all filters the feature maps of all filters will be same so whats the use of having more than one filter ?
The "trainNetwork" function in MATLAB will learn different weights for each filter, so that each filter learns different feature...

7年以上前 | 0

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Why can't I place a data cursor below a certain value on my plot?
I work in Technical Support at the MathWorks. This is a bug in the data cursor with logarithmic plots. The developers are aware ...

7年以上前 | 2

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Symbolic boolean function error at evaluation
I was able to isolate the error at y(0,0) to the "or(a,b)" function in "y(a,b)". You are getting this error because you need to ...

7年以上前 | 0

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error using predict function for SVM
I was able to run the code without error by removing the name value pair ('Leaveout', 'on) from the function call to "fitrsvm". ...

7年以上前 | 2

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How to change the decimal separator of abbreviated axes ticks?
I work in MathWorks Technical Support, and the developers have been notified of your feature request. They will consider adding ...

7年以上前 | 1

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How can I interpolate geographic data?
In the latest release (R2017a) there is a "geointerp" function that may help. Here is a link to the documentation page: <htt...

7年以上前 | 1