Solved


Selecting books on MATLAB for experts and beginners (blindfolded)
* Imagine you have been blindfolded and asked to pick up any two books randomly from the table. * There are n books suitable f...

13 years ago

Solved


edge detection
write a function that gives the indexes of rising or falling edge x is a vector (assume it contains always at least one eleme...

13 years ago

Solved


Getting the indices from a matrice
Getting the indices from a matrice. Inspired by Problem 645. Getting the indices from a vector by the great Doug Hull. Given a...

13 years ago

Solved


Size of this cup?
The given vector has diameter of the cup in mm sampled at micrometer increments in depth from top to bottom, need output in cc a...

13 years ago

Solved


Person of interest?
given a person_of_interest, what is his_name?

13 years ago

Solved


Calculate the area of a triangle between three points
Calculate the area of a triangle between three points: P1(X1,Y1) P2(X2,Y2) P3(X3,Y3) these three points are the vert...

13 years ago

Solved


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

13 years ago

Solved


Cody Computer Part 2 - Get the license number of Cody Computer
In the Cody computer investigation party, you may have already solved : <http://www.mathworks.com/matlabcentral/cody/problems...

13 years ago

Solved


Sophie Germain prime
In number theory, a prime number p is a *Sophie Germain prime* if 2p + 1 is also prime. For example, 23 is a Sophie Germain prim...

13 years ago

Solved


Create a vector whose elements depend on the previous element
The idea is to create a vector A whose elements depend on the previous element : *A(i+1) = 2*A(i)+1* *2 Inputs*: - A : The...

13 years ago

Solved


Mersenne Primes
A Mersenne prime is a prime number of the form M = 2^p - 1, where p is another prime number. For example, 31 is a Mersenne prim...

13 years ago

Solved


Are you in or are you out?
Given vertices specified by the vectors xv and yv, and a single point specified by the numbers X and Y, return "true" if the poi...

13 years ago

Solved


Project Euler: Problem 9, Pythagorean numbers
A Pythagorean triplet is a set of three natural numbers, a b c, for which, a^2 + b^2 = c^2 For example, 3^2 + 4^2 =...

13 years ago

Solved


Back to basics 2 - Function Path
Covering some basic topics I haven't seen elsewhere on Cody. Given a string that is the name of a MATLAB function, return a s...

13 years ago

Solved


Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

13 years ago

Solved


Find the "ordinary" or Euclidean distance between A and Z
A, B and Z define three points in the 3D _Euclidean_ space of the form: A = [x1;y1;0]; B = [x2;y2;0]; Z = [x2;y2;z]; Find th...

13 years ago

Solved


Return elements unique to either input
Given two numeric inputs a and b, return a row vector that contains the numbers found in only a or only b, but not both. For ex...

13 years ago

Solved


capable husband?
* The prospective husband must pass a background check, * and *functions* faithfully, as suggested by <http://www.mathworks.com...

13 years ago

Solved


No Twins?
Write a function that accepts as input a vector and returns the same vector, but retaining only the first occurrence of an eleme...

13 years ago

Solved


Back to basics 17 - white space
Covering some basic topics I haven't seen elsewhere on Cody. Remove the trailing white spaces from the input variable

13 years ago

Solved


How many monitors are connected ?
How to obtain the numbers of monitors connected to your computer ?

13 years ago

Solved


More luck than brains
Give a random function that guess and return numbers from 1 to 6 exactly like the test suite .

13 years ago

Solved


Matrix with different incremental runs
Given a vector of positive integers a (>=0); How does one create the matrix where the ith column contains the vector 1:a(i) poss...

13 years ago

Solved


Sum the Infinite Series II
For any x in the range 0 < x and x < 2*pi radians, find the sum of the following infinite series: c = 1 + 1/2*cos(x) + 1/2*3...

13 years ago

Solved


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 ...

13 years ago

Solved


Acidity of vinegar and salts
Assuming: pH (potentia hydrogenii) = - log10(H+ ionic concentration in mol/Liter). For a buffer solution containing acetic acid ...

13 years ago

Solved


Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

13 years ago

Solved


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 ...

13 years ago

Solved


Count photos
Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total nu...

13 years ago

Solved


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: ...

13 years ago

Load more