Community Profile

# Michael Eldredge

678 total contributions since 2017

View details...

Contributions in
View by

Solved

Better bullseye matrix
<http://www.mathworks.com/matlabcentral/cody/problems/18-bullseye-matrix Problem 18> asks to create a bullseye matrix like this:...

etwa ein Jahr ago

Solved

Angle between Two Vectors
The dot product relationship, a dot b = | a | | b | cos(theta), can be used to determine the acute angle between vector a and ve...

etwa ein Jahr ago

Solved

Parasitic numbers
Test whether the first input x is an n-parasitic number: <http://en.wikipedia.org/wiki/Parasitic_number>. ( _n_ is the second in...

etwa ein Jahr ago

Solved

Choose the best fitting dominoes
You will be given a cell array of nx2 matrices. Choose one row from each matrix. These are the ordered pairs that will be plac...

etwa ein Jahr ago

Solved

Solitaire Cipher
Implement the <http://en.wikipedia.org/wiki/Solitaire_(cipher) solitaire cipher>. Since this is from Wikipedia, I am capturin...

etwa ein Jahr ago

Solved

Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

etwa ein Jahr ago

Solved

N-Queens Checker
Picture a chessboard populated with a number of queens (i.e. pieces that can move like a queen in chess). The board is a matrix,...

etwa ein Jahr ago

Solved

Find Index of maximum Value and maximum Value of a vector
Find the Index of the first occurrence of the maximum value in a vector and also the maximum value in the vector. Example: [...

etwa ein Jahr ago

Solved

Given input in radians, output to degrees

etwa ein Jahr ago

Solved

Basic arrays operations.
Apply element-by-element binary operation 'fun' to two arrays (A and B).

etwa ein Jahr ago

Solved

Find the product of a Vector
How would you find the product of the vector [1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0] times 2?; x = [1 : 0.5 : 6]; y ...

etwa ein Jahr ago

Solved

Generate a string like abbcccddddeeeee
This is the string version of Problem 1035. <http://www.mathworks.com/matlabcentral/cody/problems/1035-generate-a-vector-like-1-...

etwa ein Jahr ago

Solved

Volume and area of a sphere
Input(r) - radius Output([v,s]) - volume and area

etwa ein Jahr 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...

etwa ein Jahr ago

Solved

Circumscribed circles
Given the lengths of the 3 sides of a triangle, output the radius of the circumscribed circle. Example: [3 4 5] -> 2.5

etwa ein Jahr ago

Solved

Vertical matrix sort
Given a matrix x with n rows and m columns, return a matrix y with 2n rows and m columns, such that every column in x is sorted ...

etwa ein Jahr ago

Solved

Divisible by 4
Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...

etwa ein Jahr ago

Solved

Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

etwa ein Jahr ago

Solved

Sum the squares of numbers from 1 to n
For a given value of n return the sum of square of numbers from 1 to n. Example For n = 2 then sum of squares = 5 (1^2 + ...

etwa ein Jahr ago

Solved

Largest Twin Primes
<http://en.wikipedia.org/wiki/Twin_prime Twin primes> are primes p1, p2 = p1 + 2 such that both p1 and p2 are prime numbers. Giv...

etwa ein Jahr ago

Solved

Construct a string from letters and counts
Given two input arrays like this: [5,3,1] ['a','b','c'] Output a string that contains each letter the specified num...

etwa ein Jahr ago

Solved

Create an anti-identity matrix
Create an anti-identity matrix of given dimension. Examples n = 2 A = [0 1; 1 0] n = 3 A = [0 0 1; 0 1 0; 1 0 0...

etwa ein Jahr ago

Solved

Vectorizing, too easy or too hard?
Please insert a . before any ^, * or / in the string. That's it!!

etwa ein Jahr ago

Solved

Cody Matlab Version
What is the current Cody Matlab Release? *Output:* string *Examples:* '(R2012a)' or 'R2012a' Hint: We have mo...

etwa ein Jahr ago

Solved

Minefield Sonar
*Background* In mine-hunting games (e.g. Microsoft Minesweeper), the user is provided with a covered grid that, upon a left c...

etwa ein Jahr ago

Solved

Gauss Eliminate 2-by-2 example
Use forward elimination to make the coefficient matrix, A, an upper triangular matrix, and then solve using back substitution, f...

etwa ein Jahr ago

Solved

Determine the length of a string of characters
Determine the length of a string of characters

etwa ein Jahr ago

Solved

Square the input
Given a scalar or vector x, return the square of each element. Example x = [7 2] answer = [49 4]

etwa ein Jahr ago

Solved

UICBioE240 problem 1.18
exp(pi/5*i) and exp(pi/5i). Is there any difference in result? Write yes or no as a string.

etwa ein Jahr ago

Solved

Matlab Basics - Set unwanted parts of a vector to zero
Consider a vector x, of length >= 7, write a script to set elements 2, 5, and 6 to zero. Example x = [1 2 3 4 5 6 7] --> ...

etwa ein Jahr ago