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Duration of a trip in minutes

Input is a string which includes the duration of a trip. Convert the duration to minutes. For example if the duration of a t...

24 días ago

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Alternative Dimensions

Given a multidimensional matrix, transform the matrix so the dimensions are in the order given by variable ord. For example, giv...

24 días ago

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String Array Basics, Part 2: Convert String Array to Cell Array; No Missing Values

<http://www.mathworks.com/help/matlab/characters-and-strings.html String array> and cell array are two types of containers for s...

24 días ago

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Red and green towers

Frankie has a large number of wooden cubes, painted in red and green. He is building little towers with his cubes, by stacking t...

24 días ago

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How long does it take to run a bath?

Given the *volume flow rate* (volume/time) of a faucet and the *volume* of a bath tub, find the amount of time it takes to fill ...

24 días ago

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Create a v-notch vector without "sort" function

Given a vector vec, create a v-shaped vector as shown below: vec = [ 10 2 3 89 5 7 90 0 12] ...

24 días ago

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normalize group of numbers to integers

Hi guys! I have a group of 4 numbers x,y,z,w which comes from 4 integers multiplied with a common factor. [x,y,z,w] = c [i,j,k,...

24 días ago

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Primes Faster for Large N

This Challenge is to improve the "primes" function for speed. This may be accomplished by fixing memory usage. The Matlab fun...

24 días ago

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Decoding : Find the value

'u' in the function below is of type char or string and 'v' is of type int or double. function y = your_fcn_name( u, v) ...

24 días ago

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Linear system solve

Solve a linear set of equations as described in the following link: http://www.people.virginia.edu/~teh1m/cody/linsolv1.pdf

24 días ago

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ismember: Enhanced Performance for 'rows' and width - Speed Scoring (66% savings)

The Challenge is to perform very fast the 'ismember' function for a long and wide array. The width of the array is expanded fro...

24 días ago

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Unique: Enhanced Performance - Large and Wide Array - Speed Improvement (66% savings)

The Challenge is to perform very fast unique function for a long and wide array. The data is small integer representing data ...

24 días ago

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ismember: Enhanced Time Performance for 'rows' - Speed Scoring (90% savings)

The Challenge is to perform very fast the 'ismember' function for a long and wide array. The data is small integer representi...

24 días ago

Solved

Unique: Faster for options 'rows' and 'stable' for large array of uint8

Challenge: Execute unique(a,'rows','stable') Faster for 'a' being uint8. The "unique" function for the 'rows' and 'stable' o...

24 días ago

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Find: Faster Alternatives for Large Sorted/Unique Vectors

The Challenge is to create faster Find methods for large unique ascending vectors. Methods exist that are 1000 times faster t...

24 días ago

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Unique: Speed Enhancement for uint(8,16,32)

This Speed Performance Challenge is to optimize Unique for processing uint8/uint16/uint32 variables. *Input:* A (column vecto...

24 días ago

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REPMAT Enhancement - Faster for Large Row Replication of Vector

The Challenge is to modify repmat.m to maintain all of its normal functionality and enhance its performance for large row replic...

24 días ago

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Cubic Integer Constrained Solution

Find an integral non-trivial solution (x,y,z ~=0) (x=0 or y=0 or z=0 are trivial) for the cubic equation 987,654,321x + ...

24 días ago