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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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Constructing strings
* Construct a string alphaString from 'a' to endLetter, using the double colon operator. Ex: If endLetter = 'e', then alphaSt...

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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...

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

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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...

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Back to basics 15 - Benchmark
Covering some basic topics I haven't seen elsewhere on Cody. Return an array of the benchmark values for MATLAB.

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Back to basics 5 - Clipboard
Covering some basic topics I haven't seen elsewhere on Cody. Copy the input string to the clipboard

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Relational operators and row arrays: Run times
* Construct a row array fastRunTimes containing all elements of runTimes equal to or less than 480 seconds. Ex: If runTimes =...

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Back to basics 3 - Temp Directory
Covering some basic topics I haven't seen elsewhere on Cody. Return a string that is the path to the system's current temp di...

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only input
Return the output without writing any code into the function.

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Count photos
Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total nu...

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Replicate elements in vectors
Replicate each element of a row vector (with NaN) a constant number of times. Examples : n=2, A=[1 2 3] -> [1 1 2 2 3 3] n=0...

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Extracting data: Heart rate (pulse)
The resting heart rate for an average adult is 60 - 100 beats per minute. Assign row array heartExtracted with all values in row...

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Constructing column arrays
* Construct a column array elevatorStops with values 2, 4, 5, 9, and 10

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Adding an element: Ticker tape
* Add stockPrice to the beginning of row array tickerTape

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Function call in expression: Reduced pricing.
Write a single statement that assigns cartTotal with the discounted cost of items 1 and 2. Function DiscountedPrice will return ...

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Try 1.5.4: Celsius to Fahrenheit
Write a program to convert an input given in Celsius to Fahrenheit. Examples: Input celsiusValue = 100 Output fahrValu...

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

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Comments
* Fix the syntax errors.

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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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Character variable: Compass direction
* Assign compassDirection with sensorReading's value. Both are character variables.

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Population growth
Assign finalPopulation with the population size given an initial population, population growth rate, and number of years. The fi...

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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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Declaring a string
* Assign streetAddress with the string 1313 Mockingbird Lane.

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Indexing the last element: Print queue
* Delete the last element of row array printQueue.

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