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

13 years ago

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Minimum Sum thru a Lower Triangle
This Challenge is to find the minimum cumulative sum that traverses from row-1 thru row-N via vertical/diagonal adjacent element...

13 years ago

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Calculate the peak value of square wave
Given the peak value of sine wave, calculate corresponding peak value of square wave, if both have same RMS voltage.

13 years ago

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Find matching parenthesis
One of the most indispensable things about a great text editor for programming is the ability to quickly jump between matching p...

13 years ago

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Generate N equally spaced intervals between -L and L
Given N and L, return a list of numbers (in ascending order) that divides the interval [-L L] into N equal-length segments. F...

13 years ago

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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...

13 years ago

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Cannon Ball
Given g (acceleration due to gravity) and desired altitude x, find the minimum ground velocity of a cannon ball to reach x.

13 years ago

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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...

13 years ago

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Celsius to Fahrenheit converter
Convert Celsius to Fahrenheit degrees.

13 years ago

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peta to nano (x-ray)
for certain x-ray radiation, given frequency in petahertz, give wavelength in nanometer, must be accurate +/- 25%

13 years ago

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Create matrix of replicated elements
Given an input element x, and the dimensions, (m, n) return a matrix of size m x n filled with element x. Example: Input: ...

13 years ago

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Getting the absolute index from a matrix
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to get the <http://www.ma...

13 years ago

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

13 years ago

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First non-zero element in each column
For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero ...

13 years ago

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Celcius to Kelvin
Convert Celsius degrees to Kelvin temperature.

13 years ago

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Number of digits in an integer
Specifies how many digits in a given integer. Example: in=100 ==> out=3

13 years ago

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Remove white space from the string
Remove the white spaces (trailing and leading) from the input variable

13 years ago

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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...

13 years ago

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Return the Fibonacci Sequence
Write a code which returns the Fibonacci Sequence such that the largest value in the sequence is less than the input integer N. ...

13 years ago

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Try 1.5.4: Celsius to Fahrenheit
Write a program to convert an input given in Celsius to Fahrenheit. Examples: Input celsiusValue = 100 Output fahrValu...

13 years ago

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Sum the numbers on the main diagonal
Sum the numbers on the main diagonal of an n-by-n matrix. For input: A = [1 2 4 3 6 2 2 4 7]...

13 years ago

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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...

13 years ago

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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...

13 years ago

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

13 years ago

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Return 'on' or 'off'
When the input is true, return 'on', otherwise, return 'off'.

13 years ago

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Create incrementing array
Given a and b generate an output matrix as shown in following examples: a=2 b=5 output=[2 20 200 2000 20000] a=4 b...

13 years ago

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normalize group of numbers to integers
Hi guys! I have a group of 4 numbers x,y,z,w which comes from 4 integers multiplied with a common factor. [x,y,z,w] = c [i,j,k,...

13 years ago

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Range Testing
Range Testing. Write a function that sets y = the range of input array x

13 years ago

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Cofactor
Given a matrix, find the cofactor of the element in 'i'th row and 'j'th column.

13 years ago

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Pluralization
Define function plu(n) that returns '' (an empty string) if n=1, or 's' otherwise. This is handy for displaying messages from a...

13 years ago