# Pauli Huusari

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"Low : High - Low : High - Turn around " -- Create a subindices vector

Let two vectors *lo* and *hi* be given. The job is to create a index vector like so idx = [lo(1):hi(1) lo(2):hi(2) ...]...

3 months ago

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find out eigenvector of matrix

find out eigenvector of matrix A =eye(3); Answer is [0 0 1; 0 1 0; 1 0 0];

3 months ago

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Matlab Basics II - Determine if an array has a 3rd dimension

For an array A, determine whether it has 3 dimensions, return 0 if x is only 2D, and 1 if x is 3D

3 months ago

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Matlab Basics - Create a row vector

Write a Matlab script to create a row vector of 10 consecutive numbers x = [1 2 3 4 5 6 7 8 9 10]

3 months ago

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Element by element multiplication of two vectors

Given two input vectors, return the element-by-element product. Example A = [1 2 3] B = [7 3 1] The answer should be...

3 months ago

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Make an awesome ramp for a tiny motorcycle stuntman

Okay, given a vector, say v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 3 6 9 11 0; 6 9 ...

3 months ago

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Replace every 3rd element in a vector with 4

x is a vector of undetermined length You are to replace every 3rd element with the number 4, example: x = [11 23 34 43 2 3...

3 months ago

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Replace values under a limit

For a vector x and number n, the goal is to find every element of x inferior to n and replace it by n. Example x= [ 1 2 3...

3 months ago

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Back to basics 19 - character types

Covering some basic topics I haven't seen elsewhere on Cody. Return the number of punctuation characters in the input variabl...

3 months ago

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Rotate a matrix for 180 degree

Rotate a matrix for 180 degree for eg: x=[1 2 3 4] y=[4 3 2 1]

3 months ago

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Reverse a string

Reverse the given string. Example input = 'reverse' output = 'esrever'

3 months ago

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Find the area of a triangle

Given a triangle with a base b and height h, return the triangle area.

3 months ago

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Matlab Basics - Pick out parts of a vector

Consider x a vector of length >= 7 (there are at least 7 elements in the vector, write a script that extracts the 2nd element, a...

3 months ago

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Matlab Basics II - Log and natural log

Write a function that calculates the difference between the log and natural log of a vector, to two decimal places example: ...

3 months ago

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Sum of diagonals elements of a matrix

Given a matrix, return the sum of all the elements across the diagonals. E.g. A = [1 2 3; 4 5 6; 7 8 9;...

3 months ago

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Sum of the Matrix Elements

Add up all the elements in a NxM matrix where N signifies the number of the rows and M signifies the number of the columns. E...

3 months ago

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Append two matrix as shown below example

Append two matrix as shown below example A=[1 2; 3 4] and B=[5 6;7 8] Answer must be 1 2 5 6 3...

3 months ago

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Find the sum of n squares

What is the sum of the squares of the first n integers?

3 months ago

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Tricky timing

Write a function that takes between 0.5 seconds and 0.6 seconds to run.

3 months ago

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Find Out sum of principal diagonal element of given matrix

Find out sum of principal diagonal element of given matrix If A=[1 0 0; 0 1 0;0 0 1], then answer must be 3.

3 months ago

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Matlab Basics - Set unwanted parts of a vector to zero

Consider a vector x, of length >= 7, write a script to set elements 2, 5, and 6 to zero. Example x = [1 2 3 4 5 6 7] --> ...

3 months ago

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Back to basics 14 - Keywords

Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of all MATLAB keywords

3 months ago

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Vector Magnitude Calculator

'a' is a vector that starts at the origin and ends at (x, y). Find ||a||. Hint: It is as simple as "ABC".

3 months ago

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Replace May with April

For instance, if the input is input_str = 'The flowers may bloom in April'; then the output is output_str = 'The flo...

3 months ago

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06 - Matrix Equations 3

Define the matrices _aMat_, _bMat_, and _cMat_: <<http://samle.dk/STTBDP/Assignment1_3a.png>> ( _aMat_ = 9x9 matrix full o...

3 months ago

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03 - Matrix Variables 5

Make the following variable: <<http://samle.dk/STTBDP/Assignment1_3e.png>>

3 months ago