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Count decimal digits of a number
* Given an integer number you have to return the number of its digits. * For example 248 has 3 digits and 1589 has 4 digits ...

6 years ago

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Number of vertices of a hypercube
Return the number of vertices of a n-dimensional hypercube.

6 years ago

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Celsius to Kelvin
Convert Celsius degrees to Kelvin temperature.

6 years ago

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Schwarzschild radius
Compute the <http://en.wikipedia.org/wiki/Schwarzschild_radius Schwarzschild radius> for objects of mass m (kg). Use c = 299,792...

6 years ago

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

6 years ago

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Factorize THIS, buddy
List the prime factors for the input number, in decreasing order. List each factor only once, even if the factorization includes...

6 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...

6 years ago

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Fahrenheit to Celsius converter
Convert Fahrenheit to Celsius degrees.

6 years ago

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Find the hypotenuse
Given a and b (the two sides of a right-triangle), find c, the hypotenuse.

6 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...

6 years ago

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Basic Operation with the middle number of odd matrix
# Take an odd matrix *like* 3-by-3 # Access the *middle element* of the matrix i.e in case of 3-by-3 matrix the index of the pa...

6 years ago

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Number of 1s in the Binary Representation of a Number
*Description* Return the number of 1s in the (unsigned integer) binary representation of a number. This function should be ab...

6 years ago

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Test if a matrix is symmetric
Write a logical function that returns 1 if the input matrix is symmetric and 0 otherwise.

6 years ago

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How long is the longest prime diagonal?
Stanislaw Ulam once observed that if the counting numbers are <http://en.wikipedia.org/wiki/Ulam_spiral arranged in a spiral>, t...

6 years ago

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Back to basics 12 - Input Arguments
Covering some basic topics I haven't seen elsewhere on Cody. Return a value equal to the number of input arguments to the fun...

6 years ago

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Pascal's Matrix
Given an integer n ≥ 0, generate the ( _n_+1) × ( _n_+1) lower triangular <http://en.wikipedia.org/wiki/Pascal_matrix P...

6 years ago

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2 b | ~ 2 b
Given a string input, output true if there are 2 b's in it, false if otherwise Examples: 'Macbeth' -> false 'Publius Cor...

6 years ago

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Find the index of n in magic(n)
If input n=5, then magic(n) is 17 24 1 8 15 23 5 7 14 16 4 6 13 20 22...

6 years ago

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expand intervals vol.2
Similar to problem <http://www.mathworks.co.uk/matlabcentral/cody/problems/2528 2528>. This is a more general case, when bounds ...

6 years ago

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expand intervals
You're given a row vector of an even number of monotonically increasing integers. Each pair of consecutive integers is the lower...

6 years ago

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Max Change in Consecutive Elements
If an array is given as input then find the index of consecutive elements that represent maximum change. Example: Input ...

6 years ago

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Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

6 years ago

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Calculate distance travelled when given radius and rotations
When given radius of wheel and number of rotations calculate total distance travelled consider pi=3.14

6 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.

6 years ago

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Average of square wave
given positive and negative peak , calculate dc level, 50% duty cycle

6 years ago

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convert matrix to single column
given any matrix, convert it to single column

6 years ago

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find the roots of a quadratic equation
for e.g x = [ 2 -1 -3] y = [1.5 -1]

6 years ago

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Weave two vectors into one
Weave the two given vectors into one as shown below. Example: If a = [1 1 1] b = [0 0 0] then y = [1 0 1 0 ...

6 years ago

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calculate linear convolution two vectors
for e.g in: a = [1 2 3] b = [4 5 6] out: y = [4 13 28 27 18]

6 years ago

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Calculate the integral of the polynomial
for e.g. in = [3 2 1] out = [1 1 1 0]

6 years ago