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# Johan Pelloux-Prayer

Last seen: Today Active since 2021

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I need help in the code. what am I doing wrong?
Hi, I think you can just add a check for a ':' character in your code. Alternatively you can also use regular expression to do ...

14 days ago | 0

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Solved

Side of a rhombus
If a rhombus has diagonals of length x and x+1, then what is the length of its side, y? <<https://imgur.com/x6hT6mm.png>> ...

1 month ago

Solved

Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

1 month ago

How can I plot (scatter diagram) three data series at the same time?
Hello Robert, You can use conditional statement inside an array call to filter it with your wanted data: myarray = [500,1,2;50...

1 month ago | 0

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finding equal (lon,lat) in another matrix of different size
I'm not sure exactly what you mean by A is bigger than B, if you can give a simple example of A and B it would help in helping y...

2 months ago | 1

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Solved

Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

2 months ago

Solved

Sums of cubes and squares of sums
Given the positive integers 1:n, can you: 1. Compute twice the sum of the cubes of those numbers. 2. Subtract the square...

2 months ago

Solved

Relative ratio of "1" in binary number
Input(n) is positive integer number Output(r) is (number of "1" in binary input) / (number of bits). Example: * n=0; r=...

2 months ago

Solved

Vector creation
Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

2 months ago

Solved

Doubling elements in a vector
Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

2 months ago

Solved

Create a vector
Create a vector from 0 to n by intervals of 2.

2 months ago

Solved

Flip the vector from right to left
Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

2 months ago

Solved

Find max
Find the maximum value of a given vector or matrix.

2 months ago

How to plot multiple circles within a circle by using a for-loop for radius/center position?
Hi, I have been working with somewhat similiar plotting needs. To plot circles I used the polyshape built-in function with the ...

2 months ago | 0

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Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

3 months ago

Solved

Get the length of a given vector
Given a vector x, the output y should equal the length of x.

3 months ago

Solved

Inner product of two vectors
Find the inner product of two vectors.

3 months ago

Solved

Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

3 months 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...

3 months 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 ...

3 months 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:...

3 months ago

Question

Strange result of find function
Hello, I noticed a strange results of the find function today. I am using the find function to extract the indices of a time s...

3 months ago | 1 answer | 0