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Sum the entries of each column of a matrix which satisfy a logical condition.
Given a numeric matrix A and a logical array L of the same size as A, return a row vector S containing the columnwise sums of th...

11 years ago

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Replace all zeros and NaNs in a matrix with the string 'error'
Given a numeric input matrix A, possibly containing some zero values and some NaNs, replace any occurrences of zero or NaN with ...

11 years ago

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create a circulant matrix
create a circulant matrix

11 years ago

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Figurate number triangle
Check whether the input matrix is a figurate number triangle: <http://mathworld.wolfram.com/FigurateNumberTriangle.html>

11 years ago

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Sort numbers by outside digits
Sort the array so that they are sorted as if their value was a 5 digit number made from the first three and last two digits of t...

11 years ago

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Test if a Number is a Palindrome without using any String Operations
*Description* Given an integer _X_, determine if it is a palindrome number. That is, _X_ is equal to the _X_ with the digits ...

11 years ago

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Nearest
*Description* Find the value and index of the element in vector _x_ that is nearest to value _y_. _y_ should be able to be a ...

11 years ago

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Find out rooms, peak to peak, average for a square wave.
Find out rms, peak to peak, average for a square wave from peak value. <http://www.rfcafe.com/references/electrical/square-w...

11 years ago

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Baseball Pitch Question
One pitcher made 10 practice pitches during his warm up before the game. Using the given information, create a vector matrix an...

11 years ago

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Relational operators: Guessing game
* Row array userGuess contains a sequence of user guesses. Assign correctGuess with true when myNumber is equal to the user gues...

11 years ago

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

11 years ago

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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...

11 years ago

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Integer indexing array: Weekend box office
The row array movieBoxOffice stores the amount of money a movie makes (in millions of $) for the 7 days of a week, starting with...

11 years ago

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

11 years ago

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

11 years ago

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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...

11 years ago

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

11 years ago

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Comparing floating point values
* Assign matchFound with true if firstSample and secondSample within thresholdValue.

11 years ago

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

11 years ago

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Concatenating strings
* Write a statement that assigns fullName with firstName, a space, then lastName. Ex: If firstName is Alan and lastName is Tu...

11 years ago

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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...

11 years ago

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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...

11 years ago

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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...

11 years ago

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

11 years ago

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Constructing strings
* Construct a string alphaString from 'a' to endLetter, using the double colon operator.

11 years ago

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Smallest and Largest Real Numbers
Complete the function by assigning minReal with the smallest positive double precision floating-point number, and maxReal with t...

11 years ago

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Indexing the array: Moving values
* Write three statements to shift the array contents 1 position to the left. * The rightmost element should be assigned -1.

11 years ago

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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...

11 years ago

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Relational operators and row arrays: Overweight baggage
* Assign overweightBaggage with true wherever baggageWeight is above maximumWeight

11 years ago

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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 shiftedValu...

11 years ago