# Marc Jakobi

### Vela Solaris

Software innovation for the renewable energy sector.

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**Content Feed**

Solved

Sorting

Assume that x is an n-by-2 matrix. The aim is to return the first column of x, but sorted according to the second column. Exa...

6 years ago

Solved

Vectorizing, too easy or too hard?

Please insert a . before any ^, * or / in the string. That's it!!

6 years ago

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does it touch ?

given a sentence, tell how much it touches. input : string output : how much it touches touching : a bilabial phoneme d...

6 years ago

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Multiply a column by a row

* Given a column vector C and and a row vector R. * Output a matrix M. * Every column of M equals to C multiplied by correspon...

6 years ago

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Derive Me Crazy

Given a polynomial, output its derivative. Example: input = [1 0 0] % x^2 output = [2 0] % 2x

6 years ago

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Marvel or DC?

Given input vector determine if there's a DC value. If there is, output 'DC', else output 'MARVEL'

6 years ago

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Who is the smartest MATLAB programmer?

Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

6 years ago

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I told you not separate me, but you did :( - ACDC

Given input vector, output it's DC and AC value Example: input = 0 1 -1 0 ac = 0 1 -1 0 dc = 0

6 years ago

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Solve the Sudoku Row

*Description* A simple yet tedious task occurs near the end of most Sudoku-solving algorithms, computerized or manual. The ta...

6 years 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...

6 years ago

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length of string on cylinder

A cylinder H cm high has a circumference of C cm. A string makes exactly N complete turns round the cylinder while its two ends ...

6 years ago

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Binary

Given a positive, integer n, create a function that returns the respective binary number in the form of a vector. Example: ...

6 years ago

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Cody Matlab Version

What is the current Cody Matlab Release? *Output:* string *Examples:* '(R2012a)' or 'R2012a' Hint: We have mo...

6 years ago

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Make sorting matrix without sort function.

It is very valuable for student to simple sorting program because they learn about use of loop and if-statement. Sort given inpu...

6 years ago

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Create an index-powered vector

Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

6 years ago

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subtract central cross

Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

6 years ago

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Simple date to serial no. conversion

Convert a date string to a serial date number. For example if you take x='19-May-2001' then the result is 730990 x...

6 years ago

Solved

Calculate correlation.

There are two data. y1=[0 1 2 3 4]' y2=[2 3 4 5 6]' We can see positive relationship between y1 and y2. The relations...

6 years ago

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Integer or Float?

Test an input to see whether it is an integer or a floating point number. If it is an integer return 1 for 'true'. Otherwise ret...

6 years ago

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Flip the bit

Given an input character string (e.g. '1001'), return a character string with the bits flipped ('0110').

6 years ago

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Signed Magnitude

For a given input vector, return the value that is furthest from zero. For example, if x = [1 2 -12] return -12.

6 years ago

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Make roundn function

Make roundn function using round. x=0.55555 y=function(x,1) y=1 y=function(x,2) y=0.6 y=function(x,3) ...

6 years ago

Solved

Find and replaces spaces from a input string with *

For a given input string str, find how many spaces are there in the string and replace those spaces with * e.g. str = 'this is ...

6 years ago

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Specific toolboxes

Given a string that is the name of a MATLAB toolbox, return true if it is available on the Cody solvers evaluation system, false...

6 years ago

Solved

Are you in XY plane?

Take a point P as an input position Vector (x,y,z). If you are in XY plane, return 1 as an output otherwise return 0. Example...

6 years ago

Solved

Find nth maximum

Find nth maximum in a vector of integer numbers. Return NaN if no such number exists. x = [2 6 4 9 -10 3 1 5 -10]; So ...

6 years ago