# Alfonso Nieto-Castanon

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Solved

Approximate the inverse tangent by power series

Given values b (where abs(b)<=1) and n (polynomial order), write a function that calculates atan(b) by using power series.

12 months ago

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ZigZag - 02

Given a matrix, return the elements that are on the Z form of the matrix. For example - a=[1,2,3,4,5; 6,7,8,9,1; 1...

12 months ago

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Area-05

The dimension of a rectangle is given. There are two circles of equal size that are inscribed inside it.The circles are tangent ...

12 months ago

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Tell your secret

A secret can be told only to 2 persons in 5 minutes. Now, these 2 more persons can spread the secret to 4 other people in the ne...

12 months ago

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Opposite point of the earth, what is the antipodal of a point ?

Given two strings(lat and long) that represent the geographic coordinates of a point in the earth, you have to find out what is ...

12 months ago

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Gapful numbers

If a number is divisible by the number formed by the first and last digit of that number then it is defined as a gapful number. ...

12 months ago

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Reepeating numbers in array

Repeating numbers in array In = [1 0 0 0 2 0 0 0 3 0 0 0 0 0 5 0 0 0 0]. Out = [1 1 1 1 2 2 2 2 3 3 3 3 3 3 5 5 5 5 5].

12 months ago

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The length of the equal sides of an isoceles triangle is 'a'.For all the possible (integer) values of the remaining side,find the associated angles between the two equal sides.

the remaining side may have many possible values.only assume integer ones for simplicity.

12 months ago

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ZigZag - 04

Given a matrix, print all its elements in the spiral form (clockwise direction). For example, a=[16 2 3 13 ...

12 months ago

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Seconds

Given the number of seconds after 12 am, find the time in the given format (12/24). If the format is not mentioned, use 24-ho...

12 months ago

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ZigZag - 03

Given a matrix of any size, print its elements from the zigzag form of the matrix. For example, a=[1 2 3; 4 5 6; ...

12 months ago

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Image Processing 004: Zernike Coefficients

*Fit Zernike Terms to a wavefront.* The class notes of <http://www.visualopticslab.com/OPTI535/Lectures/Class06_08.pdf Schwie...

12 months ago

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Maya - 03

Following up on the previous two problems, now you've to add or subtract two Maya numerals. The 3rd input will be a function ...

12 months ago

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Maya - 02

<https://en.wikipedia.org/wiki/Maya_numerals> Prev. prob. - <https://www.mathworks.com/matlabcentral/cody/problems/45375-maya...

12 months ago

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Maya - 01

Given a number, convert it into the Maya numeral system. <https://en.wikipedia.org/wiki/Maya_numerals> For example, n...

12 months ago

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Maya long Count

Given a Mayan date, calculate the number of days after the end of the last Great Cycle. <https://en.wikipedia.org/wiki/Maya_c...

12 months ago

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Hanging cable - 02

previous problem - <https://www.mathworks.com/matlabcentral/cody/problems/45373-hanging-cable-01> The height of the poles...

12 months ago

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How lucky r u ?

Find the nth number in the following sequence <https://oeis.org/A264940>

12 months ago

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Sieve of Eratosthenes

Find the nth lucky prime number. <https://planetmath.org/luckyprime> can u find a way for large n?

12 months ago

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chess position

given the position of a chess piece in algebric notation, convert it into 8 by 8 matrix format. For example, * 'Qd5' >> [3,4]...

1 year ago

Solved

Cryptography with A Square Matrix : Decoding

Previous Problem: <https://www.mathworks.com/matlabcentral/cody/problems/45279-cryptography-with-a-square-matrix-encoding Crypto...

1 year ago

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Cryptography with A Square Matrix : Encoding

Matrix inverse operation can be used to encode or decode of a message. For example text = 'matlab & cody'. numeric e...

1 year ago