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Back to basics 7 - Equal NaNs
Covering some basic topics I haven't seen elsewhere on Cody. Given 2 input variables, output true if they are equal, false ot...

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Indexing the array: Moving values
Assume sampleReadings always contains three elements. * Shift the array contents one position to the left. * The rightmost ...

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Relational operators and row arrays: Overweight baggage
Create a logical indexing array overweightBaggage with true in each location where the corresponding baggageWeight is greater th...

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pressure to dB?
given x ratio of pressure, find corresponding y dB

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Find the largest value in the 3D matrix
Given a 3D matrix, A, find the largest value. E.g. >> A = 1:9; >> A=reshape(A,[3 1 3]); >> islargest(A) ans = 9

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Element-wise division
* Assign row array weightKilo with the corresponding weight in kilograms. Use the following conversion: kg = lb / 2.2

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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

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Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

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So many choices
For inputs _n_ and _k_ (in that order), output the number of ways that k objects can be chosen from amongst n distinct objects. ...

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Solving Quadratic Equations (Version 1)
Quadratic equations have the form: ax^2 + bx + c = 0. Example: x^2 + 3x + 2 = 0, where a = 1, b = 3, and c = 2. The equation has...

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Logical indexing: High scores
Row array gameScores contains all player scores. Construct a row array highScores than contains all player scores greater than 5...

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Back to basics 9 - Indexed References
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix and row and column, output the index of th...

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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...

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Tree Height
Assign treeHeight with the tree height given the shadow length and angle of elevation. Simple geometry can compute the heigh...

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Relational operators: Guessing game
Row array userGuess contains a sequence of user guesses. Create a logical indexing array correctGuess with true in each location...

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Find max
Find the maximum value of a given vector or matrix.

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Logical indexing: Player scores
Player 1 and player 2 take turns playing a game. Row array gameScores contains the scores of player 1, then player 2, then playe...

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Integer indexing array: Shift left
Write a *single* statement that shifts row array attendanceValues one position to the left. The rightmost element in attendanceV...

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Double colon operator: Counting down
* Construct a row array countValues from startValue to endValue, elements decremented by -2 Ex: If startValue is 10 and end...

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Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

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Multi-line comments
* Fix the syntax errors.

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Back to basics 23 - Triangular matrix
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

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Indexing an array element
* Assign currentStudent with the second element of array testScores. _Reminder: Array indexing starts with 1._

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Function definition: Volume of a pyramid
Define a function CalculatePyramidVolume with inputs baseLength, baseWidth, and pyramidHeight. The function returns pyramidVolum...

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Double colon operator: Counting up
* Construct a row array countValues from 1 to endValue, using the double colon operator. Ex: If endValue is 5, countValues s...

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Wind Chill Computation
On a windy day, a temperature of 15 degrees may feel colder, perhaps 7 degrees. The formula below calculates the "wind chill," i...

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Rotate a Matrix
Input a Matrix x, Output y is the matrix rotating x 90 degrees clockwise

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Double colon operator: Increment by x
* Construct a row array countValues from 0 to 25, elements incremented by incrementValue. Ex: If incrementValue is 5, countVa...

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Coordinate geometry
Assign pointsDistance with the distance between point (x1, y1) and point (x2, y2). The distance is calculated by: Distance =...

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Remove DC
Input x is the sampled signal vector, may have both AC and DC components. Output y should not contain any DC component. Examp...

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