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# Zikobrelli

1.546 total contributions since 2013

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Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
For a row vector: V=[7 1 2 -3] there is one sign change (from 2 to -3). So, the function you write must return N=1. F...

meer dan een jaar ago

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Get all prime factors
List the prime factors for the input number, in decreasing order. List each factor. If the prime factor occurs twice, list it as...

meer dan een jaar ago

Solved

Television Screen Dimensions
Given a width to height ratio of a TV screen given as _w_ and _h_ as well as the diagonal length of the television _l_, return t...

ongeveer 3 jaar ago

Solved

Sum two matrices
Take two incoming matrices, and sum them

ongeveer 3 jaar ago

Solved

Matrix Ax=B problem
Take a incoming A and B vector, and solve for x

ongeveer 3 jaar ago

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Resizing Matrices
Take an 4x3 matrix, and resize it to a 2x6 matrix

ongeveer 3 jaar ago

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Vector indexing: lower than mean
Find all values in a vector lower than the mean of the vector

ongeveer 3 jaar ago

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determine the sum of the squares
if x = 4, the solution will be: y = 1^2+2^2+3^2+4^2=1+4+9+16 = 30.

meer dan 3 jaar ago

Solved

Energy-Mass Equivalence
Given input enegy of the object, E, and constant c = 300,000,000, find the mass of the object.

bijna 4 jaar ago

Solved

Given a larger and smaller matrix, perform element-by-element multiplication on the smaller matrix and a sub-matrix of the large...

bijna 4 jaar ago

Solved

test_first
just to test

bijna 4 jaar ago

Solved

0, 2, 0, -2, 0, 2, 0, -2, ...
Generate the first n terms of a periodic sequence defined as f(x) = 0, 2, 0, -2, 0, 2, 0, -2, ..., for x = 1, 2, 3, 4, 5, 6...

bijna 4 jaar ago

Solved

Change on Spiral Matrix
n>=3, generate a matrix of nth such that n^2 is the max number, and max number must be in [1,1] or [end, end]. One example will ...

bijna 4 jaar ago

Solved

Change input vector
If a input vector is [3, 2, 6, 1, 6], the output vector is [3, 2, 6, 1, 6] + [1, 2, 3, 4, 5] = [4, 4, 9, 5, 11].

bijna 4 jaar ago

Solved

multiple 2
function y = your_fcn_name(x) y = 2*x; end

bijna 4 jaar ago

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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)...

bijna 4 jaar ago

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determine if
determine if the elements of a matrix is a nan and return true

bijna 4 jaar ago

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sum all the elements
sum all the elements in the matrix ex) x=[1 2 3 4; 5 6 7 8; 9 10 11 12] y=78

bijna 4 jaar ago

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cheating technique1
in these cody problems, there is a way to cheat. find out how people cheat.

bijna 4 jaar ago

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find a number (cheat)
find a number input^5 = input the out put should be the number. try cheating

bijna 4 jaar ago

Solved

sum as columns
sum as columns.

bijna 4 jaar ago

Solved

cheating technique2
there are some ways to get hints just by looking at the test suits to cheat. try.

bijna 4 jaar ago

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y=x
y=x

bijna 4 jaar ago

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'Price of pizza!'
If you want to check pizza's price, try this! price is proportional to its volume, so you have to multiply 0.1(\$) to pizza's v...

bijna 4 jaar ago

Solved

Pairwise column flip
Given matrix *M_in*, flip every pair of columns. So if *M_in* is 1 2 3 4 1 2 3 4 then *M_out* is 2 1 4 3 2 1 4 3 ...

bijna 4 jaar ago

Solved

Implement a bubble sort technique and output the number of swaps required
A bubble sort technique compares adjacent items and swaps them if they are in the wrong order. This is done recursively until al...

bijna 4 jaar ago

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Find last zero for each column
Given a numeric array of arbitrary size, return the row index of the last zero for each column. If a column contains all nonzero...

bijna 4 jaar ago

Solved

Return the length of the longest word in the string.
Example: Input s='A fractal is a natural phenomenon or a mathematical set that exhibits a repeating pattern that display...

bijna 4 jaar ago

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

bijna 4 jaar ago

Solved

Flipping a Matrix
Flipping matrix up and down. If a central row is exists, leave it, and flip remaining rows. Example Mat = magic(3) ...

bijna 4 jaar ago