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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

約14年前

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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...

約14年前

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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...

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Roll the Dice!
*Description* Return two random integers between 1 and 6, inclusive, to simulate rolling 2 dice. *Example* [x1,x2] =...

約14年前

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Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

約14年前

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How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

約14年前

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

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Sorted highest to lowest?
Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1

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Replace NaNs with the number that appears to its left in the row.
Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

約14年前

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Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

約14年前

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Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

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Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

約14年前

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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...

約14年前

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error occuring
I'll go ahead and throw out the obvious, ensure that 'bw2' is a 2-dimensional numeric matrix. <http://www.mathworks.com/help/to...

約14年前 | 0

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cheby1
Chebyshev Type 1 filter design <http://www.mathworks.com/help/toolbox/signal/ref/cheby1.html> 1-D digital filter <http:...

約14年前 | 0

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The Goldbach Conjecture, Part 2
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

約14年前

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The Goldbach Conjecture
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...

約14年前

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Function definitions are not permitted at the prompt or in scripts
If I'm reading your website correctly, you're saying that this is a script named fftAI.m: [d, time] = getdata(ai, ai.Sample...

約14年前 | 0

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What do you think of Cody, new service for MATLAB Central
I like Cody as a set of brain teasers that may force you to think about fairly unique problem that you may not have encountered ...

約14年前 | 2

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GUIDE-edit text
you would put that code that you wrote in the edittext callback function.

約14年前 | 0

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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...

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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...

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naming a structure
You can use eval, but eval needs to be used with extreme care. You can really screw things up accidentally. eval([NewName '...

約14年前 | 2

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Processing files using a for loop
something like this: myDir = uigetdir; %gets directory myFiles = dir(fullfile(myDir,'*.wav'); %gets all wav files in str...

約14年前 | 16

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Does "sortrows" not work with a semicolon?
Works fine for me. I did this: a = magic(5); b = sortrows(a,-1); When you say, does not work, do you mean it gives yo...

約14年前 | 0

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changing the style in a loop with hold all...
I found a solution to this, which I just put in your previous question. If you set the default colororder and linestyleorder,...

約14年前 | 4

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How do I create a legend and include loop variable values in the labels?
Not in the way that you're currently doing it, but if you're not married to the idea of using your P variable how you currently ...

約14年前 | 6

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It dseon't mettar waht oedrr the lrettes in a wrod are.
An internet meme from 2003 (read more <http://www.snopes.com/language/apocryph/cambridge.asp here>) asserted that readers are re...

約14年前

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plotting problem
Have you tried just adjusting the y-axis scale? doc axis

約14年前 | 0

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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...

約14年前