已解决


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...

10 years 前

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

10 years 前

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Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

10 years 前

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Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

10 years 前

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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...

10 years 前

已解决


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

10 years 前

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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...

10 years 前

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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...

10 years 前

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Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

10 years 前

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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...

10 years 前

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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...

10 years 前

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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...

10 years 前

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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...

10 years 前

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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...

10 years 前

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

10 years 前

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

10 years 前

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

10 years 前

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

10 years 前

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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...

10 years 前

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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.

10 years 前

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

10 years 前

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Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

10 years 前

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

10 years 前

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

10 years 前

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Problem with datenum (R2012a)
the function datestr takes an optional second argument where you can explicitly set the display format datestr(now,'yyyy-mm-...

10 years 前 | 0

已回答
How to convert hours, minutes, seconds to seconds?
Assuming you mean seconds in the day % initialize variables NUM_SECONDS_PER_DAY = 86400.0; timeStrings = {'14:5...

10 years 前 | 2

| 已接受

已回答
Filter out nonzero number in array of n*2 dimension.
matrix = [3145728,0;... 0,3;... 0,3;... 0,3;... 3145728,0;... 0,192;... 0,0;... ...

10 years 前 | 0

已回答
How can I avoid infinite while loop?
Set a number equal to the number of times you want to loop (this case I chose 11), subtract each time you're in the loop, and ad...

10 years 前 | 0

已回答
directly use results of function
subsref(strsplit('abc.def.ghi','.'),struct('type','{}','subs',{{2}})) The subsref function takes two arguments. The first ...

10 years 前 | 1

提问


Storing classes as appdata and modifying them
Apologies if this has been asked before, I have not been able to find any similar questions on Matlab Central or any other site....

10 years 前 | 2 个回答 | 1

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个回答