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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...

casi 2 años hace | 1 respuesta | 0

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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...

casi 2 años hace | 0 respuestas | 0

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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...

casi 2 años hace | 1 respuesta | 0

1

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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...

alrededor de 2 años hace | 1 respuesta | 0

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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...

alrededor de 2 años hace | 2 respuestas | 0

2

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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...

alrededor de 2 años hace | 3 respuestas | 0

3

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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...

alrededor de 2 años hace | 1 respuesta | 0

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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: ...

alrededor de 2 años hace

Resuelto


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...

alrededor de 2 años hace

Resuelto


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.

alrededor de 2 años hace

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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.

alrededor de 2 años hace

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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] =...

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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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]; ...

alrededor de 2 años hace

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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]

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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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...

alrededor de 2 años hace

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

alrededor de 2 años hace

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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.

alrededor de 2 años hace

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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 ...

alrededor de 2 años hace

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

alrededor de 2 años hace

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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:...

alrededor de 2 años hace

Pregunta


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...

más de 3 años hace | 2 respuestas | 0

2

respuestas

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

más de 3 años hace | 1 respuesta | 0

1

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Pregunta


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...

más de 3 años hace | 1 respuesta | 0

1

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