Solved

Flag largest magnitude swings as they occur
You have a phenomenon that produces strictly positive or negative results. delta = [1 -3 4 2 -1 6 -2 -7]; Marching thr...

nästan 11 år 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 ...

nästan 11 år ago

Solved

Upper triangular matrix
Create a function to retrieve the upper triangular matrix of a matrix (without using tril). The matrix will always be square. ...

nästan 11 år 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...

nästan 11 år ago

Solved

Converting numbers back from extended form
Thanks for all the help you guys gave me on writing out the numbers in extended form in <http://www.mathworks.com/matlabcentral/...

nästan 11 år ago

Solved

Celsius to Fahrenheit converter
Convert Celsius to Fahrenheit degrees.

nästan 11 år ago

Solved

Sum the Digits of a Number
Given an integer, sum the digits repeatedly until you end up with a single value less than 10. For example, if you add the di...

nästan 11 år 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...

nästan 11 år ago

Solved

Calculate the Levenshtein distance between two strings
This problem description is lifted from <http://en.wikipedia.org/wiki/Levenshtein_distance>. The Levenshtein distance betwee...

nästan 11 år ago

Solved

Mandelbrot Numbers
The <http://en.wikipedia.org/wiki/Mandelbrot_set Mandelbrot Set> is built around a simple iterative equation. z(1) = c z...

nästan 11 år ago

Solved

Subset Sum
Given a vector v of integers and an integer n, return the the indices of v (as a row vector in ascending order) that sum to n. I...

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

Reverse the Words (not letters) of a String
*Description* Change the words of a string such that the words appear in reverse order. You may assume that the string is a n...

nästan 11 år ago

Solved

DC chopper
Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then...

nästan 11 år ago

Solved

Return area of square
Side of square=input=a Area=output=b

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

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...

nästan 11 år ago

Solved

Count up then down
Create a function that produces counting up from 0 up to n then down to 0 n=2 --> 0 1 2 1 0 n=3 --> ...

nästan 11 år ago

Solved

vectorization in N
For a given integer n (n>1), compute the sum f (i) (1 <= i <= n) where f (i) = 1 if n is odd and 2 otherwise.

nästan 11 år ago

Solved

Triangle Numbers Below N
This is an offshoot of <http://www.mathworks.com/matlabcentral/cody/problems/5-triangle-numbers Cody Problem 5: Triangle Numbers...

nästan 11 år ago

Solved

Given two strings, find the maximum overlap
Given two strings s1 and s2, create a new string s3 which is as short as possible and contains both strings. If s1 = [1 2...

nästan 11 år ago

Problem

Friday the 13th
According to superstition, lots of unpleasant stuff happens on Friday the 13th, so you might like to find the next occurence of ...

nästan 11 år ago | 2 | 48 solvers

Solved

Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

nästan 11 år ago

Solved

Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

nästan 11 år ago

Solved

Output any real number that is neither positive nor negative
Output any real number that is neither positive nor negative

nästan 11 år ago

Solved

Celcius to Kelvin
Convert Celsius degrees to Kelvin temperature.

nästan 11 år ago

Solved

kmph to mps
convert kilometer per hour to meter per second

nästan 11 år ago

Solved

Count from 0 to N^M in base N.
Return an array of numbers which (effectively) count from 0 to N^M-1 in base N. The result should be returned in a matrix, with ...

nästan 11 år ago

Solved

pressure to dB?
given x ratio of pressure, find corresponding y dB

nästan 11 år ago

Solved

Back to basics 10 - Max Float
Covering some basic topics I haven't seen elsewhere on Cody. Return the largest positive floating-point number MATLAB can han...

nästan 11 år ago