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 ...
5年以上 前
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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 ...
How many trades represent all the profit?
Given a list of results from trades made:
[1 3 -4 2 -1 2 3]
We can add them up to see this series of trades made a profit ...
Implement simple rotation cypher
If given a letter from the set:
[abc...xyz]
and a shift, implement a shift cypher.
Example:
'abc'
with a shi...
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Solitaire Cipher
Implement the <http://en.wikipedia.org/wiki/Solitaire_(cipher) solitaire cipher>.
Since this is from Wikipedia, I am capturin...
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How long is the longest prime diagonal?
Stanislaw Ulam once observed that if the counting numbers are <http://en.wikipedia.org/wiki/Ulam_spiral arranged in a spiral>, t...
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Find the biggest empty box
You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You wan...
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Natural numbers in string form
Create a cell array of strings containing the first n natural numbers. _Slightly_ harder than it seems like it should be.
Ex...
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Fix the last element of a cell array
Note: this is lifted directly from <http://www.mathworks.com/matlabcentral/answers/82825-puzzler-for-a-monday Puzzler for a Mond...
Cell Counting: How Many Draws?
You are given a cell array containing information about a number of soccer games. Each cell contains one of the following:
* ...
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Remove element(s) from cell array
You can easily remove an element (or a column in any dimension) from a normal matrix, but assigning that value (or range) empty....
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Convert a Cell Array into an Array
Given a square cell array:
x = {'01', '56'; '234', '789'};
return a single character array:
y = '0123456789'
Create a cell array out of a struct
Create a cell array out of a (single) struct with the fieldname in the first column and the value in the second column:
in:
...