Community Profile

photo

George Papazafeiropoulos


Last seen: Today Con actividad desde 2012

Major, Infrastructure Engineer, Hellenic Air Force Civil Engineer, M.Sc., Ph.D.

Estadísticas

All
  • Knowledgeable Level 3
  • 3 Month Streak
  • Commenter
  • Promoter
  • Explorer
  • Personal Best Downloads Level 4
  • First Review
  • 5-Star Galaxy Level 5
  • First Submission
  • Revival Level 1
  • Knowledgeable Level 2
  • First Answer

Ver insignias

Content Feed

Ver por

Resuelto


make an eye matrix which element is 1:n
for a given input n, make an n by n matrix which contains elements 1:n for example input =5 output = [1 0 0 0 0;0 2 0 0 0; 0...

más de 7 años hace

Resuelto


basics -making a matrix
make a matrix which contains input x as the last element. the intervals should be +1 ex) input = 5 output= [0 1 2 3 4 5] ex)...

más de 7 años hace

Resuelto


Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

más de 7 años hace

Resuelto


Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

más de 7 años hace

Resuelto


surrounded centroid
create a [n*n] matrix. n must be odd number. its centroid is n which is surrounded by n-1. example: surround(5)= 1 2 ...

más de 7 años hace

Resuelto


create a square matrix
create a [n*n] matrix. example: mat(4)= [ 1 4 9 16 4 4 9 16 9 9 ...

más de 7 años hace

Resuelto


Calculate the hypotenuse of a right triangle without using ^ and sqrt ()
Find out the hypotenuse of right triangle. Say a = 4, b = 3 then c = 5 Please don't use ^ and sqrt() function.

más de 7 años hace

Resuelto


Solve sin(x) without sin(x)
Calculate y = sin(x) x = 0 -> y= 0 without the use of sin(x) or cos(x)

más de 7 años hace

Resuelto


Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

más de 7 años hace

Resuelto


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]; and ...

más de 7 años hace

Resuelto


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:...

más de 7 años hace

Resuelto


N-plicate me
Modified version of duplicate and triplicate me. Repeat elements of input vector with given input n Ex: input = [1 2 3 4 5...

más de 7 años hace

Resuelto


tridiagonal matrix
Given vectors u and v, make a tri-diagonal symmetric matrix such that u is in the main diagonal and v is below and above diagona...

más de 7 años hace

Resuelto


Calculate inverse matrix in m by n matrix
x=(1:10)' y=roundn(2*x+7*rand(size(x)),-1) a*x=y Estimate a using inverse matrix calculation. This is principle of li...

más de 7 años hace

Resuelto


Sum positive elements of matrix.
Calculate sum of positive elements of the matrix.

más de 7 años hace

Resuelto


Change matrix to vector
Vector is a matrix whose size is 1 x n or n x 1. Change matrix to vector. x = 4 3 5 1 ...

más de 7 años hace

Resuelto


Two dimensional moving average
A=[1 2 3 4 5 1 2 2 2 3 2 3 3 3 4 1 1 4 4 2] B=[1 1;1 1]; % This is can be used for weight factor of moving a...

más de 7 años hace

Resuelto


Triplicate me
Given an input vector, output a 3n vector with all elements of input vector repeated thrice Example : in->[1 2 3 5] out...

más de 7 años hace

Resuelto


Implement zero-based indexing for Matrices
Given an input vector and position (which is zero based) output the value Example: x = [1 2; 4 5] pos = [0 1] value = 5 ...

más de 7 años hace

Resuelto


Implement zero based indexing (Vectors only)
Given an input vector and position (which is zero based) output the value Example: x = [1 2 4 5] pos = 2 value = 4

más de 7 años hace

Resuelto


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 ...

más de 7 años hace

Resuelto


Frequency Analysis of Text
Frequency analysis is a common task in cryptoanalysis. It is essentially counting the occurrences of alphabets (regardless of ca...

más de 7 años hace

Resuelto


Magnitude of a vector
Given a vector x, what is its magnitude?

más de 7 años hace

Resuelto


Reduce the logic
We have three logical input, x,y and z. The output is: y = ((x&y)|z)&((z|x&y)|(z&y|x))|((x&z)|z)&((y|x&z)|(z&x|y))|(x|y|z) ...

más de 7 años hace

Resuelto


Sum of cubes
Write a program to determine sum of cubes of first n odd numbers.

más de 7 años hace

Resuelto


cross in array
Make a cross from "1" in odd size array. Other value from array should be equal to "0"; As input you get length of side of arra...

más de 7 años hace

Resuelto


Geometrical meaning of determinant
Given two vectors x,y, in 2D or three vectors x,y,z in 3D space, compute the area (or volume) of the parallelogram they define. ...

más de 7 años hace

Resuelto


Convert a vector to a lower triangular matrix
I now have a row vector and I want to convert it to a lower trilangular matrix. The rows of the lower trilangular matrix have...

más de 7 años hace

Resuelto


Rotate array 90 degrees
Example, A = [1 2 3 ; 4 5 6 ] B = rotated(A) = [ 3 6; 2 5; 1 4 ]

más de 7 años hace

Resuelto


Pad zero between every adjacent values of the vector.
you are given a vector x. you have to make an output vector y with zeros padded between every adjacent values of x. e.g x: ...

más de 7 años hace

Cargar más