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Get the area codes from a list of phone numbers
Given a string of text with phone numbers in it, return a unique'd cell array of strings that are the area codes. s = '508-647...

quasi 10 anni fa

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Create a square matrix of multiples
Given an input, N, output a matrix N x N with each row containing multiples of the first element of each row. This also applies...

quasi 10 anni fa

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Remove the small words from a list of words.
Your job is to tidy up a list of words that appear in a string. The words are separated by one or more spaces. Remove all words ...

quasi 10 anni fa

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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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Make a 1 hot vector
Make a vector of length _N_ that consists of all zeros except at index _k_, where it has the value 1. Example: Input ...

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

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

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Remove the polynomials that have positive real elements of their roots.
The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the <http://www.ma...

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2 b | ~ 2 b
Given a string input, output true if there are 2 b's in it, false if otherwise Examples: 'Macbeth' -> false 'Publius Cor...

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

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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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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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Column arrays: Transpose a row array
* Construct a row array countValues with elements 1 to endValue, using the colon operator. * Transpose countValues to result in...

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give nth decimal place of pi
max 15th place after the decimal point is ok for now

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Variable sized row arrays
* Reverse the contents of row array mileMarkers

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Array resizing: Removing elements
* Remove elements 2, 4, and 6 from row array pendingTasks

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Back to basics 15 - classes
Covering some basic topics I haven't seen elsewhere on Cody. Return the class of the input variable.

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Number of 1s in the Binary Representation of a Number
*Description* Return the number of 1s in the (unsigned integer) binary representation of a number. This function should be ab...

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

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Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

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Logic array: Identifying qualifying times
Create a logic array qualifyingIndex with true for any location where the runner is male with a running time less than 8.2. Row ...

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Linear-spaced points array
* Construct a row array plotPoints with 5 values that are spaced linearly from lowValue to highValue. Ex: If lowValue is 1 and ...

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Number of 1s in a binary string
Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

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Integer indexing array: Reverse subsets
Construct an indexing array copySubset so that the statement reversedOrder = origOrder(copySubset); results in a row array begin...

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Concatenating arrays
* Assign studentIDs with concatenated row arrays groupA and groupB

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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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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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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

quasi 10 anni fa