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Mean ignoring NaNs
Define a function that behaves in the same way as mean(x) and mean(x,d) except that it ignores NaNs (unless all of the values be...

3 months ago

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Mann-Kendall Correlation
Write a function that returns the <http://en.wikipedia.org/wiki/Kendall_tau_rank_correlation_coefficient Mann-Kendall> correlati...

3 months ago

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Looking for Squares
Need n squares that equal one square all together, none zero, none fractured. For example, calling squares(2) should output [16 ...

3 months ago

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Grandpa's telescope
Two grandkids Dorothy and Benjamin are sharing a telescope made by their grandpa, who used an old lens of spectacles as the obje...

3 months ago

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ranch area?
Your friend has a ranch with four distinct boundary lines. Three boundary lines are ideal straight roads: (1) North Club Road, (...

3 months ago

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Chromatic Tuner
Given a frequency, return the number of cents difference between the given frequency and its nearest semitone (in 12-tone equal ...

3 months ago

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Circle and Quadratic
Imagine the quadratic curve with equation y=y(x)=ax^2+bx+c On the concave side of this curve there is a circle of radius...

3 months ago

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Biggest Value in the (Neighbor)Hood
For this challenge you get two inputs: a matrix A and an integer value n. Your function should return a Matrix B of the same siz...

3 months ago

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drowsy?
This dog() may be drowsy or function immediately when you call, return 1 or 0 accordingly within 2/10 second.

3 months ago

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Inhomogenous Depth Scale Interpolation
I recently came across a dataset for physical ocean parameters such as temperature and salinity that provided data in the form o...

3 months ago

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chance in percent for minimum K heads when a good coin is tossed N times?
For example, chance is 100% for minimum 0 heads when a coin is tossed 7 times. Chance is 50% for minimum 2 heads when a coin is...

3 months ago

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Generalized N-Cards Problem
Preface: This is a generalized version of the problem I presented <http://www.mathworks.com/matlabcentral/cody/problems/271-n-ca...

3 months ago

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Return the Nth Output from an Input Command
*Description* Given _F_, a cell array whose first element is a function handle and subsequent elements are arguments, return ...

3 months ago

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Gambler?
Given a handle to a wealth function, confirm within 100 milliseconds 'Millionaire', 'Likely', or 'Gambler', if wealth() returns ...

3 months ago

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Trickier Timing
You solution should return control to main program only when the current time ends in either a 5 or 0 (e.g. the current seconds ...

3 months ago

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Pythagorean perfect squares: find the square of the hypotenuse and the length of the other side
Given the square root of a square number, *seed*, and a range, *n*, find the square number, *Z* as well as the other side, *y*, ...

3 months ago

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Generalized sorting
Write generalized sort function |sortg()| that sorts array elements in “ascending” order with given comparison funct...

3 months ago

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newRMS
find root mean square of a signal x in less time than the test code and accurate to six places.

3 months ago

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Rubik's Mini Cube: Solve Randomized Cube in 11 Moves or Less; Score is by Time (msec)
The Challenge is to Near or Optimally Solve a thoroughly scrambled Mini-Rubik's Cube(2x2x2). Any Mini-Cube can be solved in 1...

3 months ago

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Rubik's Mini-Cube: Solve Randomized Mini-Cube - Score : Moves
The Challenge is to Solve a thoroughly scrambled Mini-Rubik's Cube(2x2x2). The Performance metric is average number of moves ...

3 months ago

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Rubik's Cube: 30 Moves or Less : Contest Scoring (Time/Size/Moves)
This Challenge is to solve a thoroughly scrambled Rubik's cube with the best score (30 moves max). Score is Moves + Size/2000 + ...

3 months ago

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Rubik's Cube: 30 Moves or Less : Minimum Moves
This Challenge is to solve a thoroughly scrambled Rubik's cube in the least moves (30 moves max). Rubik's Cube can be solved ...

3 months ago

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Rubik's Cube: 30 Moves or Less : Cody Size
This Challenge is to solve a thoroughly scrambled Rubik's cube with smallest code (30 moves max). Rubik's Cube can be solved ...

3 months ago

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Code breaker, Part III: Operation Xiangliu
You have been tasked with decoding several batches of coded messages that have been intercepted. Based on previous intellig...

3 months ago

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Rubik's Cube : Solve Ten Face Move - Speed Scoring
A set of cubes will be scrambled with 10 Face moves. The Challenge is to Solve all Cubes in 10 Moves or Less. Score will be by...

3 months ago

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Perform Rubik's Cube Moves
A standard Rubik's Cube is shown in 3-D and also unfolded to identify the specific Tile-face numbering. The faces are White-U...

3 months ago

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Find Logic 9
Guess the Logic! logic(1) = 4 logic(2) = 1 logic(3) = 10 logic(4) = 2

3 months ago

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Find Logic 3

3 months ago

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Find Logic 4

3 months ago

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Find Logic 6

3 months ago