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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

mehr als 11 Jahre vor

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Fix y_correct : Hack
The Test Suite has an error. Fix the y_correct value. (See the tags for hints)

mehr als 11 Jahre vor

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Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

mehr als 11 Jahre vor

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Create a vector whose elements depend on the previous element
The idea is to create a vector A whose elements depend on the previous element : *A(i+1) = 2*A(i)+1* *2 Inputs*: - A : The...

mehr als 11 Jahre vor

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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 ...

mehr als 11 Jahre vor

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Create logical matrix with a specific row and column sums
Given two numbers *|n|* and *|s|*, build an |n-by-n| logical matrix (of only zeros and ones), such that both the row sums and th...

mehr als 11 Jahre vor

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

mehr als 11 Jahre vor

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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...

mehr als 11 Jahre vor

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

mehr als 11 Jahre vor

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Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

mehr als 11 Jahre vor

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the return of the hackathon
You might have found a solution to our <http://www.mathworks.com/matlabcentral/cody/problems/205-hackathon-the-beginnings previo...

fast 12 Jahre vor

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Is my wife right? Now with even more wrong husband
Again, as in "Is my wife right?" ( <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right> ), answer 'yes' r...

fast 12 Jahre vor

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Hackathon: the beginnings
I am thinking of a number between 1 and 10000... can you guess what this number is? *Description* The test suite has rando...

fast 12 Jahre vor

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QWERTY Shift Code Decoder
Decode a string encoded using the QWERTY shift code. QWERTY shift code is where the message was touch typed but with an offse...

fast 12 Jahre vor

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

fast 12 Jahre vor

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Is my wife right?
Regardless of input, output the string 'yes'.

fast 12 Jahre vor

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

fast 12 Jahre vor

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Permute diagonal and antidiagonal
Permute diagonal and antidiagonal For example [1 2 3;4 5 6;7 8 9] -> [3 2 1;4 5 6;9 8 7] WITHOUT diag function (and variable n...

fast 12 Jahre vor

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Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

fast 12 Jahre vor

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QWERTY coordinates
Given a lowercase letter or a digit as input, return the row where that letter appears on a <http://en.wikipedia.org/wiki/Keyboa...

fast 12 Jahre vor

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

fast 12 Jahre vor

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Pattern matching
Given a matrix, m-by-n, find all the rows that have the same "increase, decrease, or stay same" pattern going across the columns...

fast 12 Jahre vor

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

fast 12 Jahre vor

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

fast 12 Jahre vor

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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

fast 12 Jahre vor

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Pangrams!
A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

fast 12 Jahre vor

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Add two numbers
Given a and b, return the sum a+b in c.

fast 12 Jahre vor

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Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

fast 12 Jahre vor

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

fast 12 Jahre vor

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

fast 12 Jahre vor