Inviato
Relimiter for text files
A utility for robustly changing the delimiter within text files in order to make them easier to use
oltre 11 anni fa | 210 download |
Inviato
Zero-Order Hold
A fast, basic implementation of a ZOH designed to run on vectors/matrices
oltre 12 anni fa | 1681 download |
Inviato
Download Daily Data from Google and Yahoo! Finance
Provides functions for getting data from both data sources as well as helper utility functions
oltre 12 anni fa | 17256 download |
Inviato
Predictive model calibration
A script exploring 3 useful concepts in predictive models
oltre 12 anni fa | 743 download |
Risolto
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...
quasi 13 anni fa
Risolto
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),....
quasi 13 anni fa
Risolto
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] ...
quasi 13 anni fa
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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.
quasi 13 anni fa
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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...
quasi 13 anni fa
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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...
quasi 13 anni fa
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collision
several cars (n) were involved in this collision, the input matrix (vm) has n rows and two columns, first column for velocity an...
quasi 13 anni fa
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Alternating sum
Given vector x, calculate the alternating sum y = x(1) - x(2) + x(3) - x(4) + ...
quasi 13 anni fa
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Woodall number
Test whether the input is a Woodall number: <http://en.wikipedia.org/wiki/Woodall_number> _Please do not cheat by simply chec...
quasi 13 anni fa
Risolto
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 ...
quasi 13 anni fa
Inviato
Speeding Up Algorithms: When Parallel Computing and GPUs do and don't accelerate
Files and slides from the presentation of the same name.
quasi 13 anni fa | 795 download |
Risolto
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...
quasi 13 anni fa
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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...
quasi 13 anni fa
Risolto
Who invented zero?
We know the importance zero in computer science, mathematics... but who invented zero? Clue: He was the first in the line ...
quasi 13 anni fa
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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: ...
quasi 13 anni fa
Risolto
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...
quasi 13 anni fa
Risolto
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: ...
quasi 13 anni fa
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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 ...
quasi 13 anni fa
Risolto
Tricky timing
Write a function that takes between 0.5 seconds and 0.6 seconds to run.
quasi 13 anni fa
Risolto
Volume of this donut
Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.
quasi 13 anni fa
Risolto
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. ...
quasi 13 anni fa
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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...
quasi 13 anni fa
Risolto
Better bullseye matrix
<http://www.mathworks.com/matlabcentral/cody/problems/18-bullseye-matrix Problem 18> asks to create a bullseye matrix like this:...
quasi 13 anni fa