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Multiply 2 numbers
Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, pro...

13 years ago

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Project Euler: Problem 8, Find largest product in a large string of numbers
Find the greatest product of five consecutive digits in an n-digit number. 73167176531330624919225119674426574742355349194934...

13 years ago

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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 ...

13 years ago

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Is this group simply connected?
Given connectivity information about a graph, your job is to figure out if the graph is fully connected. You are given a list of...

13 years ago

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how can i give the appearnce as dimmed to gui panel?
As for dimming the panel itself, will changing the 'BackgroundColor' property suffice for you? For example, the following code w...

13 years ago | 0

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Spot the outlier
All points except for one lie on a line. Which one is the outlier? Example: You are given a list of x-y pairs in a column ...

13 years ago

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Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

13 years ago

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Choose the best fitting dominoes
You will be given a cell array of nx2 matrices. Choose one row from each matrix. These are the ordered pairs that will be plac...

13 years ago

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Find best domino orientation
Given a list of pairs, find the orientation they should be placed in a line, such that the sum of the absolute values of the dif...

13 years ago

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Find perfect placement of non-rotating dominoes (easier)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

13 years ago

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Rotate and display numbered tile
Imagine a square tile with four numbers on it, one on each edge. We will call these edges north, east, south, and west. If th...

13 years ago

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Find best placement for ordered dominoes (harder)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

13 years ago

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Stuff the Board
You have a stack of tiles to put onto an array-like playing board. Each tile has a number (always an integer), and the board var...

13 years ago

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Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...

13 years ago

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Count from 0 to N^M in base N.
Return an array of numbers which (effectively) count from 0 to N^M-1 in base N. The result should be returned in a matrix, with ...

13 years ago

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How can I pick out two values of cell array with NaN without using a forloop and using indexing instead?
If I understand you correctly, the following code should work: a = {1:4;[5 nan 6 nan];[8 9 nan 10];[11 nan nan 12];13:16}; ...

13 years ago | 0

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How do I take the average of every n values in a vector?
Try this... n = 1000; % average every n values a = reshape(cumsum(ones(n,10),2),[],1); % arbitrary data b = arrayfun(...

13 years ago | 15

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For-Loop Alternative for Faster Code Execution
And if the _for_ loop you are concerned about is looping through the cells in your cell array, then try this code: [~,~,idx...

13 years ago | 0

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For-Loop Alternative for Faster Code Execution
Still unsure about your problem setup, but the following code will yield your desired result for the example above. [~,~,id...

13 years ago | 1

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I'm getting error message 'In an assignment A(I) = B, the number of elements in B and I must be the same, Error in BM3D (line 25) Y(i+1)=Y(i)*(1-k/(6*pi))+sqrt(12*pi/deltat)*m1*deltat/(6*pi); '... Can someone please help me to correct my mist
* Your current error is due to the fact that your code attempts to assign a 2x2 array to a single element in the vector Y. * Th...

13 years ago | 0

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I need to remove every other 9 rows of a matrix
How about this? r = 57; % total rows c = 3; % total columns d = 19; % rows in each data set n = 9; % remove fir...

13 years ago | 1

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Say something funny
Say something funny, or not. Your solution will be (fully automatically and objectively) scored based on how clever or funny ...

13 years ago

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Reverse the elements of an array
Reverse the order of elements in an array: eg: input X = [ 1 2 3 ; 4 5 6 ; 7 8 9 ] o...

13 years ago

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Uniform binary crossover
Given two binary vectors, return the two children by combining the genes of them using a binary crossover mask. More informat...

13 years ago

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Count up then down
Create a function that produces counting up from 0 up to n then down to 0 n=2 --> 0 1 2 1 0 n=3 --> ...

13 years ago

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vectorization in N
For a given integer n (n>1), compute the sum f (i) (1 <= i <= n) where f (i) = 1 if n is odd and 2 otherwise.

13 years ago

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The Answer to Life, the Universe, and Everything
A variation of a previous Hitchhiker's Guide to the Galaxy problem. *Inputs:* Life, the Universe, and Everything *Output:*...

13 years ago

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Replace multiples of 5 with NaN
It is required to replace all values in a vector that are multiples of 5 with NaN. Example: input: x = [1 2 5 12 10 7] ...

13 years ago

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Find max
Find the maximum value of a given vector or matrix.

13 years ago

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Who is the smartest MATLAB programmer?
Who is the smartest MATLAB programmer? Examples: Input x = 'Is it Obama?' Output = 'Me!' Input x = 'Who ?' Ou...

13 years ago