Solved

Find the path through the cell
A list of cells is given. Return true if the elements of the list increase monotonically (each element is strictly larger tha...

9 months ago

Solved

Rainbow matrix
Create a "rainbow matrix" as described in the following examples Input = 3 Output = [ 1 2 3 2 3 2 ...

9 months ago

Solved

That's not my hat!
There exists a highly secretive hat consortium. Members possess identical hats. The members are invited to a meeting. All of the...

9 months ago

Solved

bad colorimeter?
You have tested one good and one bad colorimeters with a colored solution at two path lengths of light and recorded transmittanc...

9 months ago

Solved

Create array of all Distances between two Sets of Points : No Neural Network Toolbox
This Challenge is a subsection of <http://www.mathworks.com/matlabcentral/cody/problems/1110-usc-fall-2012-acm-martian-pranks Ma...

9 months ago

Solved

Change a specific color in an image
The ability to change colors can be a useful tool in image processing. Given an m x n x 3 array (much like CData in images), fin...

9 months ago

Solved

Wilf-Zeilberger pairs
Take as inputs two functions _F_ and _G_, and two scalar values _n_ and _k_. Test whether the functions are candidates to be a W...

9 months ago

Solved

Find the right x in a 1. order Polynomal (y = m*x+c)
Given two points in a Cartesian coordinate system, find the x-value, where polynomial of 1. order (y = m*x+c) is equal to a giv...

9 months ago

Solved

Find 1's Complement
Find 1's complement of a binary number For Example: x = 10011010 1's complement of x = 01100101

9 months ago

Solved

Create One Large Eye of size N x N Quickly?
*<http://en.wikipedia.org/wiki/Aye_(yes) Aye !!!>*

9 months ago

Solved

Takuzu row
Takuzu row is one row in a logic puzzle of a rectangular grid. The rules are as follows: (1) The row is filled with 1s and 0s...

9 months ago

Solved

Schrödinger dog
Everyone knows that dogs are less unpredictable than cats. But is that proven? Is that measurable at all? YES! NOW IT IS! ...

9 months ago

Solved

Pumpkin Pie!
It's time for desert at Thanksgiving. You've all gathered at grandma's house, and she's about to start cutting the pumpkin pie. ...

9 months ago

Solved

Find the quantization index of an analog value using a 6-bit quantizer.
Given a sinusoidal waveform x(t)=4.5*sin(2*pi*100*t) is sampled at 8000 sample per second. Assume that signal range is between -...

9 months ago

Solved

Draw Dominos
Write a function to draw dominos. The number on each side can range from 0 to 9. For example, for an input of [3,7], your functi...

9 months ago

Solved

replace nan values iteratively.
replace nan values with the average of two neighbour non-nan value iteratively as follow; x = [2; 4; 6; nan; nan; nan; 10]; ...

9 months ago

Solved

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...

9 months ago

Solved

Number Puzzle - 100

9 months ago

Solved

Find my secret function IV
We use the same secret function used on the past "Find my secret function ..." x=23 -------->> y=3 X=1000 ------->> 163

9 months ago

Solved

Find my secret function II
If give my function a x value it will give me a y value, so find the secret of it: Examples: input x=23 ---- >>> output y=1...

9 months ago

Solved

Find my secret function I
If give my function a x value it will give me a y value, so find the secret of it: Examples: input x=[2 5 6 8 9] ---- >>> o...

9 months ago

Solved

Reduce the logic
We have three logical input, x,y and z. The output is: y = ((x&y)|z)&((z|x&y)|(z&y|x))|((x&z)|z)&((y|x&z)|(z&x|y))|(x|y|z) ...

9 months ago

Solved

Chicken Race
2 chickens, Pete and Fred, compete in a 100 meter race. Pete runs at a velocity of vp meter/second and Fred is slower, running ...

9 months ago

Solved

Generalizing square area to triangle area
Cody Problem 61070 asked for the height, h, of a right triangle that had the same area, A, of a square with side length, c, and ...

9 months ago

Solved

Compute MOSFET oxide thickness
Calculate the oxide thickness in nanometers for an NMOS on a p-type substrate. Inputs (all scalars): NA — acceptor concentrat...

9 months ago

Solved

The rabbit problem
Suppose a newly-born pair of rabbits, one male, one female, are put in a field. Rabbits are able to mate at the age of one month...

9 months ago

Discussion

Using Persistent Variables to Survive Timeouts and Repeated Calls
When solving Cody problems, sometimes your solution takes too long — especially if you’re recomputing large arrays or iterative ...

9 months ago | 0

Discussion

Tackling Complex Nonlinear Equations with fzero
The fzero function can handle extremely messy equations — even those mixing exponentials, trigonometric, and logarithmic terms —...

9 months ago | 0

Solved

Fibonacci Word
F1='0' F2='1' F3 is the catenation of the previous two. So, F3 = cat(F2,F1)='10'. similarly, F4 = cat(F3,F2)= '101' ...

9 months ago

Solved

Get a Fibonacci number's index.
*N.B.* For the purpose of this exercise, the first Fibonacci number is 1, and the second is 2; that is, |fib(1) = 1| and |fib(2)...

9 months ago