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04 - Scalar Equations 1
Define the variable a: <<http://samle.dk/STTBDP/Assignment1_4-a.png>> Use this to calculate x: <<http://samle.dk/STTBD...

fast 10 Jahre vor

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Vectorize the digits of an Integer
Create a vector of length N for an integer of N digits. x=123045; x_vec=[1 2 3 0 4 5]; I happened upon a trick to do ...

fast 10 Jahre vor

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Add two numbers
Add two numbers (For beginners)

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Count from 0 to N^M in base N.
Return an array of numbers which (effectively) count from 0 to N^M-1 in base N. The result should be returned in a matrix, with ...

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Is it a number?
Determine if input is numeric. If it is,output is 1; if it is not, output is 0.

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Knight's Tour Checker
Given a matrix a, determine whether or not a legal <http://en.wikipedia.org/wiki/Knight's_tour knight's tour> is present. The kn...

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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...

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kmph to mps
convert kilometer per hour to meter per second

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Back to basics 20 - singleton dimensions
Covering some basic topics I haven't seen elsewhere on Cody. Remove the singleton dimensions from the input variable (e.g. if...

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Replace multiples of 5 with NaN
It is required to replace all values in a vector that are multiples of 5 with NaN. Example: input: x = [1 2 5 12 10 7] ...

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length of a vector
Find twice the length of a given vector.

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Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

fast 10 Jahre vor

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The Answer to Life, the Universe, and Everything
A variation of a previous Hitchhiker's Guide to the Galaxy problem. *Inputs:* Life, the Universe, and Everything *Output:*...

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Find the biggest empty box
You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You wan...

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Logical operators and arrays: 3-input and truth table
Given 3 inputs (inputA, inputB, inputC), assign threeInputAnd with the truth table outcomes for a 3 variable logical-and operati...

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02 - Vector Variables 4
Make the following variable: <<http://samle.dk/STTBDP/Assignment1_2d.png>> (Logarithmically spaced numbers between 1 and 1...

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03 - Matrix Variables 5
Make the following variable: <<http://samle.dk/STTBDP/Assignment1_3e.png>>

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Connect Four Win Checker
<http://en.wikipedia.org/wiki/Connect_Four Connect Four> is a game where you try to get four pieces in a row. For this problem, ...

fast 10 Jahre vor

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

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Flip the main diagonal of a matrix
Given a n x n matrix, M, flip its main diagonal. Example: >> M=magic(5); >> flipDiagonal(M) 9 24 1 ...

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Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

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Back to basics 26 - Keywords
Covering some basic topics I haven't seen elsewhere on Cody. Return a cell array of strings of all MATLAB keywords.

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Return ! if array element starts with a certain letter. Otherwise return ?
Input x=['try' 'once' 'more']; s='t' Output ans='!' Input x=['try' 'once' 'more']; s='O' Output ...

fast 10 Jahre vor

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Logical variables: Running late?
* Assign onTime with true if noTraffic is true and gasEmpty is false.

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Longest Divisor Run
Given the vector a, find the longest run of consecutive numbers that can be evenly divided by the same number d where d > 1. ...

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Back to basics 25 - Valid variable names
Covering some basic topics I haven't seen elsewhere on Cody. Given a string, return true if it is a valid MATLAB variable nam...

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Magic!
Check whether the input matrix is a normal magic square: <http://en.wikipedia.org/wiki/Magic_square> Output the logical va...

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Indexing the array: Shift right with variable sized arrays
* Write a statement to shift the array contents 1 position to the left. * Assign the rightmost element with -1. Ex: [12, 85...

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03 - Matrix Variables 6
Make _fMat_ be a 5x3 matrix of random integers with values from -3 to 3 (Hint: use *randi*)

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Mandelbrot Numbers
The <http://en.wikipedia.org/wiki/Mandelbrot_set Mandelbrot Set> is built around a simple iterative equation. z(1) = c z...

fast 10 Jahre vor