Roie Knaanie

Active since 2022

Followers: 0 Following: 0

Lecturer at the Hebrew University of Jerusalem, Software and Programming languages

Programming Languages:
Python, Java, MATLAB, Perl
Spoken Languages:
English
Professional Interests:
Python with MATLAB, Algorithm Acceleration and Code Generation, Computational Biology, Computer Science

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3 Problems
609 Solutions

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Solved

generate number in particular way
A = [1 5 2 7]; MAX = 10; generate a array Y = [1 2 2 2 2 2 3 3 4 4]; i.e. total eleme...

1 hour ago

Solved

S-T-R-E-T-C-H I-T O-U-T
You will be given a row of numbers (x), and a single number (n). Your job is to write a script that will stretch out the row of...

1 hour ago

Solved

Weave two matrices together to form one matrix
Take the first column from matrix a, then insert the first column from matrix b, and so on. For example: a = [1 2 3 4]; b ...

4 days 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:...

5 days ago

Solved

How to reverse spdiags?
The spdiags function extracts all nonzero diagonals from the m-by-n matrix A. So if A=[1 2 3;4 5 6;7 8 9], spdiags(A)=[7 4...

5 days ago

Solved

Neither minima nor maxima
Input v is a vector. Return all the elements of v which are not a local minimum or maximum. Example: v = [1 2 3 4 5] Ou...

5 days ago

Solved

Find indices of diagonal elements
Given a matrix A and a diagonal index d (where 0 indicates the main diagonal and off-diagonals are identified by positive and n...

5 days ago

Solved

Sum My Indices
Given inputs M and N (in that order), output an MxN matrix whose entries are equal to the sum of their indices. Example input...

7 days ago

Solved

Find Rows with Specift Properities
Delete rows with specific properites as following: Find rows that have a negative value in any element of the row and delete it...

7 days ago

Solved

remove every row&col for every nan
for a given matrix, remove the row and column of every nan. Example x=[1 2 NaN 4 5 6 7 8 ...

7 days ago

Solved

Remove entire row and column in the matrix containing the input values
Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

7 days ago

Solved

Column Removal (★★★)
(copy of prob 7) Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2...

7 days ago

Solved

row removal
Consider a matrix and remove the first row of the matrix.

7 days ago

Solved

Remove a specific row with min value
Remove the row that contain the min value in the matrix? If you like the problem, please give it a like:)

7 days ago

Solved

Remove a specific row with max value
Remove the row that contain the max value in the matrix? If you like the problem, please like it :)

7 days ago

Solved

Remove a specific column with min value
Remove the column that contain the min value in the matrix? If you like the problem, please give it a like:)

7 days ago

Solved

Remove a specific column with max value
Remove the column that contain the max value in the matrix? If you like the problem, please give it a like:)

7 days ago

Solved

Remove all the columns contains only zero
Remove the column from the matrix which has only zeros . Refer the Example below a= 1 0 3 0 23 0 56 0 1 ...

7 days ago

Solved

Sum of elements in a vector (★)
(copy of Prob. 3) Find the sum of all the numbers of the input vector x. Input x = [1 2 3 5] Output y is 11 <> ...

7 days ago

Solved

convert matrix to single column
given any matrix, convert it to single column

9 days ago

Solved

Getting the absolute index from a matrix
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to get the <http://www.ma...

9 days ago

Solved

What is the distance from point P(x,y) to the line Ax + By + C = 0?
Given a point, P(x,y), find the distance from this point to a linear line. INPUTS: x, y, A, B, C OUTPUTS: d, the distance ...

10 days ago

Solved

05 - Vector Equations 3
Define the vector _dVec_: <<http://samle.dk/STTBDP/Assignment1_2d.png>> (Logarithmically spaced numbers between 1 and 10) ...

10 days ago

Solved

Matlab Basics II - Free Fall
An object freely falling from rest under gravity covers a distance x given by: x = 1/2 gt^2 write a function that calculat...

10 days ago

Solved

Matlab Basics - Rounding II
Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

10 days ago

Solved

Finding fourier transform of a given vector
Find the fourier transform of a given input vector for ex a=[1 2 3 4] then y=[ 10.0000 + 0.0000i -2.0000 +...

10 days ago

Solved

Matlab Basics II - squares
Write a function that takes matrix A, and squares each element in the matrix example: A = [1 2 3] output = [1 4 9]

11 days ago

Solved

Back to basics 14 - Keywords
Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of all MATLAB keywords

12 days ago

Solved

Nth root of a number
Given an input and a number N, find the Nth root of the number(s)

12 days ago

Solved

Matlab Basics - Logical Tests I
Write a script to test whether a year number is for a leap year or not. eg. x = 1884 output = 1 eg. x = 3 output = 0

12 days ago