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Find the nth composite number.

Everyone heard about the nth prime number. Let's try to find out the nth composite. For example , 1 is the first composite, 10 i...

5 mesi ago

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Which Prime

Given two prime numbers, specify the relation between them i.e. - 'Twin Prime', 'Cousin Prime', 'Sexy Prime' or 'None'

5 mesi ago

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Sort Except Zeros

Sort the numbers in a vector. But the position of zeros should not be changed. Example: sort_except_zeros( [5 3 0 0 2 4] ) == [...

5 mesi ago

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Draw 'S'

draw S using nxn matrix, where n is odd and greater than 4 S = [1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 0 0 0 0 1 ...

5 mesi ago

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Add the number of horizontal and vertical movements to each matrix element

Given n, create a square matrix and with element (1,1) = 1, add 1 to each element for each horitizonal and vertical movement. E...

5 mesi ago

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Draw the symbol '+'

Draw '+' in an x-by-x matrix (where x is odd and x >3) Example: x = 5 y = [0 0 1 0 0 0 0 1 0 0 1 1 1 1 1 0 ...

5 mesi ago

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Draw 'Y'

Draw 'Y' in an x-by-x matrix (where x is odd and x >= 3) Examples: x = 3 y = [1 0 1 0 1 0 0 1 0] x = 5 y = [1...

5 mesi ago

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Total resistance of resistors in parallel

What is the total resistance of a number of resistors in parallel? A vector R contains the resistances (in Ohm) of n resistors,...

5 mesi ago

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Total resistance of resistors in series

What is the total resistance of a number of resistors in series? A vector R contains the resistances (in Ohm) of n resistors, w...

5 mesi ago

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Find the summation, mean, median, mode and standard deviation of a given array.

An array is given. Find out the summation, mean, median, mode and standard deviation of a given array. If x=[1,2,2,3,3,3,4,4,4,...

5 mesi ago

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Draw 'P' !!!

Draw a n by n matrix 'P' using 0s and 1s. (n is odd and greater than 4) if n=5 , then the output will be [1 1 1 1 1 1 0 0 0...

5 mesi ago

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remove nans fast

There are several ways to locate and remove nans in a matrix, and return an 1d row vector. In this problem the challenge is ...

5 mesi ago

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UICBioE240 problem 1.11

Store a series of numbers into a 4 by 4 matrix, starting with the first few positions going right and down, and leaving the rest...

5 mesi ago

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Easy Sequences 23: Hat Guessing Game!

Consider the following Game Show: Hats, with numbers written on each, were placed on the heads of the participants. Participant...

5 mesi ago

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Draw matrix 'Swiss flag'( Euro 2020)

Draw a x-by-x matrix 'Swiss flag' using '0' and '1'.(x is odd and bigger than 4) Example x=5 ...

5 mesi ago

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determine the sum of decimal part for given matrix

determine the sum of fraction part for the given matrix

5 mesi ago

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Easy Sequences 1: Find the index of an element

The nth element of a series is defined by: . Obviously, the first element . Given the nth element , find the value of the corre...

5 mesi ago

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Draw a x-by-x matrix 'Denmark flag'(Euro(2020)

Draw a x-by-x matrix 'Denmark flag' using '4' and '1'.(x is odd and bigger than 4) Number 4: Caption S.Kjær and number 1: K.S...

circa un anno ago

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Draw matrix 'Swiss flag'( Euro 2020)

Draw a x-by-x matrix 'Swiss flag' using '1' and 0.(x is odd and bigger than 4) Example x=5 ans = [1 1 1 1 ...

circa un anno ago

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Surface Fit z(x,y)

Given three vectors x,y,z. Find four coefficients c = [cxx cxy cyy c00], such that z = cxx*x.^2+cxy*x.*y+cyy*y.^2+c00. For e...

circa un anno ago

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GJam March 2016 IOW: Polynesiaglot Small

This Challenge is derived from <http://code.google.com/codejam/contest/8274486/dashboard#s=p2 GJam March 2016 Annual I/O for Pol...

circa un anno ago

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Gallery function, learning

write a Function, edit something or Add something that give us like the following for random n: n=2 ans= [ 0 1 ...

circa un anno ago

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Where's Waldo?

Find the string 'Waldo' in the character matrix given and return the indices of where you found him as a 4x2 matrix where the el...

circa un anno ago

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Minimum jumps to reach end of the array

Given an array of integers where each element represents the max number of steps that can be made forward from that element. Ste...

circa un anno ago

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List the households affected by leaks in water distribution

Consider the following water distribution network, where water is pumped uni-directionally from left to right: 8...

circa un anno ago

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Crossing to Kissing - Untangle the Lines

Turn lines that cross into lines that kiss. You will be given two lines that cross at some point. Your job is to untangle the...

circa un anno ago

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Geometry: Find Circle given 3 Non-Colinear Points

*This Challenge is to determine the center and radius of a circle given three non-colinear points.* *Input:* Points *Outpu...

circa un anno 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 ...

circa un anno ago

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Given a base n, find the y values less or equal than 100(without 1), such that they will never produce a periodic number if we divide any whole number between some of them

A periodic number depends on the base b where we are working. So, for example the number 2/3 in decimal base is periodic(0.666...

circa un anno ago