Submitted
Relimiter for text files
A utility for robustly changing the delimiter within text files in order to make them easier to use
mer än 9 år ago | 1 download |
Submitted
Zero-Order Hold
A fast, basic implementation of a ZOH designed to run on vectors/matrices
mer än 10 år ago | 3 downloads |
Submitted
Download Daily Data from Google and Yahoo! Finance
Provides functions for getting data from both data sources as well as helper utility functions
mer än 10 år ago | 25 downloads |
Submitted
Predictive model calibration
A script exploring 3 useful concepts in predictive models
mer än 10 år ago | 1 download |
Solved
Generate a random matrix A of (1,-1)
Input n: is an positive integer which serves as the dimension of the matrix A; Output: A=(Aij),where each entry Aij is either...
nästan 11 år ago
Solved
Sum of first n terms of a harmonic progression
Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....
nästan 11 år ago
Solved
Detect a number and replace with two NaN's
Write code which replaces the number 1 with two NaNs. Example X = [ 1 2 NaN 4 1 3 7 NaN 1 4 NaN 2] ...
nästan 11 år ago
Solved
Magic is simple (for beginners)
Determine for a magic square of order n, the magic sum m. For example m=15 for a magic square of order 3.
nästan 11 år ago
Solved
7 segment LED display
Given a whole number, output how many segments would be lit up to display it on a 7 segment LED display (http://en.wikipedia.org...
nästan 11 år ago
Solved
letter yes yes & letter no no
Split a string into two strings, first string has all alphabetic letters, next string has all the rest, keep the order please, o...
nästan 11 år ago
Solved
collision
several cars (n) were involved in this collision, the input matrix (vm) has n rows and two columns, first column for velocity an...
nästan 11 år ago
Solved
Alternating sum
Given vector x, calculate the alternating sum y = x(1) - x(2) + x(3) - x(4) + ...
nästan 11 år ago
Solved
Woodall number
Test whether the input is a Woodall number: <http://en.wikipedia.org/wiki/Woodall_number> _Please do not cheat by simply chec...
nästan 11 år ago
Solved
Test if a Number is a Palindrome without using any String Operations
*Description* Given an integer _X_, determine if it is a palindrome number. That is, _X_ is equal to the _X_ with the digits ...
nästan 11 år ago
Submitted
Speeding Up Algorithms: When Parallel Computing and GPUs do and don't accelerate
Files and slides from the presentation of the same name.
nästan 11 år ago | 1 download |
Solved
Find the nearest integer
Given a vector of integers and a real number find the closest integer. EX: >> a = [2 4 5 6 8 10]; >> b = 4.6; >> nea...
nästan 11 år ago
Solved
Back to basics 24 - Symbolic variables
Covering some basic topics I haven't seen elsewhere on Cody. Given a string algebraic expression, return the symbolic variabl...
nästan 11 år ago
Solved
Who invented zero?
We know the importance zero in computer science, mathematics... but who invented zero? Clue: He was the first in the line ...
nästan 11 år ago
Solved
Find number of days
The input is two date in string format (dd-mm-yyyy) find out the number of days between these two dates. Example: input: ...
nästan 11 år ago
Solved
Sum the entries of each column of a matrix which satisfy a logical condition.
Given a numeric matrix A and a logical array L of the same size as A, return a row vector S containing the columnwise sums of th...
nästan 11 år ago
Solved
Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...
nästan 11 år ago
Solved
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Example: in = magic(5) in = 17 24 1 8 15 23 5 7 14 16 4 6 13 20 ...
nästan 11 år ago
Solved
Tricky timing
Write a function that takes between 0.5 seconds and 0.6 seconds to run.
nästan 11 år ago
Solved
Volume of this donut
Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.
nästan 11 år ago
Solved
random picture with random colours
write a function which creates a random(x,y) matrix with random RGB colours for example create_pic(5,5) gives us a 3d matrix. ...
nästan 11 år 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...
nästan 11 år ago
Solved
Better bullseye matrix
<http://www.mathworks.com/matlabcentral/cody/problems/18-bullseye-matrix Problem 18> asks to create a bullseye matrix like this:...
nästan 11 år ago