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Last seen: etwa 2 Monate vor |  Aktiv seit 2021

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Frage


modifying an identity matrix
I have an identity matrix. I want to put a '1' on the zeros that are right infront of the main diagonal, except at the very last...

mehr als ein Jahr vor | 1 Antwort | 0

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Frage


writing a linprog command for this optimisation p
I want to maximise a matrix , the size of which is 5 5, for example. Subject to the following constraints: . Also, there is an...

mehr als ein Jahr vor | 0 Antworten | 0

0

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Frage


copying the contents of a vector onto a longer vector
Let's say I have a vector a that is of size 4. I have a vector b of size 10. I want to copy the contents of vector a into b unti...

mehr als ein Jahr vor | 1 Antwort | 0

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Frage


Finding common elements in an array (even if they are not in the same position)
I have two vectors a and b. Both vectors may not be of the same length. I want to find the common elements between these vectors...

mehr als ein Jahr vor | 1 Antwort | 0

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Frage


getting the index after comparing two logicals
I compared two logicals and their results are as follows: a = [1 0 0 0 1] and b = [0 0 0 0 1] I wanted to compare these logical...

mehr als ein Jahr vor | 2 Antworten | 0

2

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Frage


Using switch to identify even or dd
Problem in brief: Print “Odd” if the argument is 1, 3, or 5, “Even” if the argument is 0, 2, or 4, and “Let me get back to you o...

fast 2 Jahre vor | 3 Antworten | 0

3

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Frage


reversing the digits into a string
I have a list of numbers. l1 = randi([0,9],[1,10]); I want to make this into a string without the spaces and then reverse th...

fast 2 Jahre vor | 1 Antwort | 0

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Gelöst


Vector to 3-Column Matrix
Consider a vector *A* such as A = [1 2 3 3 4 5 6] Can you convert this vector to a three-column matrix like this: ...

fast 2 Jahre vor

Gelöst


Find the largest value in the 3D matrix
Given a 3D matrix A, find the largest value. Example >> A = 1:9; >> A = reshape(A,[3 1 3]); >> islargest(A) a...

fast 2 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.

fast 2 Jahre vor

Gelöst


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.

fast 2 Jahre vor

Gelöst


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

fast 2 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...

fast 2 Jahre vor

Gelöst


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

fast 2 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...

fast 2 Jahre vor

Gelöst


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...

fast 2 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]; ...

fast 2 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]

fast 2 Jahre vor

Gelöst


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...

fast 2 Jahre vor

Gelöst


Length of the hypotenuse
Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<https://i.imgu...

fast 2 Jahre vor

Gelöst


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...

fast 2 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...

fast 2 Jahre vor

Gelöst


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

fast 2 Jahre vor

Gelöst


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.

fast 2 Jahre vor

Gelöst


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 ...

fast 2 Jahre vor

Gelöst


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

fast 2 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:...

fast 2 Jahre vor

Frage


how to count the number of occurrences of these numbers (with some conditions)
I have A(1,:) = [1, 2, 5, 2 , 1 , 2]; A(2,:) = [0,1,1,0,1,0]; I want to count the unique number of occurences in A(1,:) so t...

fast 3 Jahre vor | 2 Antworten | 0

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Frage


randomly selecting an element without randsample
How do I randomly select an element without the machine learning toolbox function randsample?

fast 3 Jahre vor | 1 Antwort | 0

1

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Frage


how to include a 'probability' when coding.
I wanted to include the concept of 'probability' when coding. For example, giving me a reward of +1 only 60% of the time. How do...

fast 3 Jahre vor | 1 Antwort | 0

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