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Reverse Run-Length Encoder

Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

meer dan 10 jaar ago

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First N Perfect Squares

*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

meer dan 10 jaar ago

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Reverse the Words (not letters) of a String

*Description* Change the words of a string such that the words appear in reverse order. You may assume that the string is a n...

meer dan 10 jaar ago

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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] =...

meer dan 10 jaar ago

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Elapsed Time

Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

meer dan 10 jaar ago

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De-dupe

Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

meer dan 10 jaar ago

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Factorize THIS, buddy

List the prime factors for the input number, in decreasing order. List each factor only once, even if the factorization includes...

meer dan 10 jaar ago

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So many choices

For inputs _n_ and _k_ (in that order), output the number of ways that k objects can be chosen from amongst n distinct objects. ...

meer dan 10 jaar ago

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High school cafeteria

Given an input vector of positive integers, return a row vector with the primes first (in increasing order) and the composites n...

meer dan 10 jaar ago

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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".

meer dan 10 jaar ago

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All your base are belong to us

Find the base _b_ logarithm of the input decimal number _x_. Express the output as a decimal number. The first argument is the n...

meer dan 10 jaar ago

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Right and wrong

Given a vector of lengths [a b c], determines whether a triangle with those sides lengths is a right triangle: <http://en.wikipe...

meer dan 10 jaar ago

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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...

meer dan 10 jaar ago

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Pascal's Triangle

Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

meer dan 10 jaar ago

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Summing Digits within Text

Given a string with text and digits, add all the numbers together. Examples: Input str = '4 and 20 blackbirds baked in a...

meer dan 10 jaar ago

Problem

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: ...

meer dan 10 jaar ago | 14 | 1006 solvers

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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: ...

meer dan 10 jaar ago

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Balanced number

Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

meer dan 10 jaar ago

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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 ...

meer dan 10 jaar ago

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Given an unsigned integer x, find the largest y by rearranging the bits in x

Given an unsigned integer x, find the largest y by rearranging the bits in x. Example: Input x = 10 Output y is 12 ...

meer dan 10 jaar ago

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Distance walked 2D

Suppose you go from x-y coordinates [3,4] to [0,0] to [0,1] to [1,1], then you walked 7 units of distance.

meer dan 10 jaar ago

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Distance walked 1D

Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

meer dan 10 jaar ago

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surface of a spherical planet

you just discovered its circumference, that is the input.

meer dan 10 jaar ago

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radius of a spherical planet

you just measured its surface area, that is the input.

meer dan 10 jaar ago

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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

meer dan 10 jaar ago

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All capital?

Are all the letters in the input string capital letters? Examples: 'MNOP' -> 1 'MN0P' -> 0

meer dan 10 jaar ago

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Volume of this donut

Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.

meer dan 10 jaar ago

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Determine if a Given Number is a Triangle Number

*Description:* Determine if the elements of an input array are triangle numbers and return the result as an array with the sa...

meer dan 10 jaar ago