Community Profile # calvin son

Last seen: en dag ago Active since 2022

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The last non-zero digit of a factorial
For given positive integer n, what is the last non-zero digit of n!? Example: factorial(11) = 39916800 Last non-zero d...

en dag ago

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Approximation of Pi (vector inputs)
Pi (divided by 4) can be approximated by the following infinite series: pi/4 = 1 - 1/3 + 1/5 - 1/7 + ... For a given numbe...

9 dagar ago

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Vector pop
Take |n| elements from the end of the vector |v| and return both the shorten vector |v| and the |n| elements in a separate vecto...

10 dagar ago

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Moving average (variable kernel length)
Find the moving average in a vector. The kernel length is a variable. For example x = 1:10 kernel_length = 2 would r...

10 dagar ago

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We have data of matrix, that is input. That contains 2 or more rows and the last row should contain the average of each column,...

10 dagar ago

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Calculate the hypotenuse of a right triangle without using ^ and sqrt ()
Find out the hypotenuse of right triangle. Say a = 4, b = 3 then c = 5 Please don't use ^ and sqrt() function.

10 dagar ago

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Array ex-OR
There are in MATLAB logical functions such as _<http://www.mathworks.co.uk/help/matlab/ref/and.html and>,_ _<http://www.math...

10 dagar ago

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Calculate cosine without cos(x)
Solve cos(x). The use of the function cos() and sin() is not allowed.

11 dagar ago

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Calculate sin(x) without sin(x)
Calculate y = sin(x) x = 0 -> y= 0 without the use of sin(x) or cos(x)

11 dagar ago

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Number of even divisors of a given number
Given a Number n, return the number of its even divisors without listing them. example: n=14 ; EvenDivisors={2,14} ; y=2 ...

11 dagar ago

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Raise a polynomial to a power
In Matlab, polynomials are represented by a vector of coefficients. For example, the polynomial p=a*x^2 + b*x + c is represente...

11 dagar ago

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Airline Ticket Mod7 Checksum
There are 13 digits in an airline ticket number. If an airline ticket number is valid, the 13th digit should be the remainder of...

11 dagar ago

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Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

12 dagar ago

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Pentagonal Numbers
Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

12 dagar ago

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Hard limit function
Classify x data as if x>=0 then y=1 if x<0 then y=0 Example x = [ -2 -1 0 1 2] y = [ 0 0 1 1 1]

14 dagar ago

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Polar Form Complex Number Entry
Write a function that takes the magnitude and angle(in degrees) of a complex number and returns a complex variable. Positive ang...

14 dagar ago

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How many unique Pythagorean triples?
For a given integer |n|, return all <https://en.wikipedia.org/wiki/Pythagorean_triple Pythagorean triples> that inlude numbers s...

14 dagar ago

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String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
<http://www.mathworks.com/help/matlab/characters-and-strings.html String array> and cell array are two types of containers for s...

16 dagar ago

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Find the Pattern 8

16 dagar ago

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Find the Pattern 7

16 dagar ago

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Find the Pattern 6

16 dagar ago

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Find the Pattern 5

16 dagar ago

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Find the Pattern 4

16 dagar ago

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Find the Pattern 2

16 dagar ago

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Find the Pattern 9

16 dagar ago

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What gear ratio does the cyclist need?
A cyclist (perhaps including our famed Codysolver the cyclist <http://www.mathworks.com/matlabcentral/cody/players/1841757-the...

16 dagar ago

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Splitting Circle
Consider a circle which has been divided into three concentric circles as depicted in the figure below The ratio betwen the a...

17 dagar ago

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Rotate input square matrix 90 degrees CCW without rot90
Rotate input matrix (which will be square) 90 degrees counter-clockwise without using rot90,flipud,fliplr, or flipdim (or eval)....

18 dagar ago

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Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

18 dagar ago