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Is this triangle right-angled?

Given three positive numbers a, b, c, where c is the largest number, return *true* if the triangle with sides a, b and c is righ...

casi 8 años ago

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It's race time! Write a faster function than the test suite call of unique().

Write a function to get unique elements of a vector faster than unique()! Input will be a vector (of integers or floating point ...

casi 9 años ago

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Is the Point in a Circle?

Check whether a point or multiple points is/are in a circle centered at point (x0, y0) with radius r. Points = [x, y]; c...

casi 9 años ago

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Create a vector whose elements depend on the previous element

The idea is to create a vector A whose elements depend on the previous element : *A(i+1) = 2*A(i)+1* *2 Inputs*: - A : The...

casi 9 años ago

Solved

Sum the entries of each column of a matrix which satisfy a logical condition.

Given a numeric matrix A and a logical array L of the same size as A, return a row vector S containing the columnwise sums of th...

casi 9 años ago

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Einsteinium-253 decay

Radioactive Einsteinium-253 has a half-life of 1,768,608 seconds. Given 1000mg of Einsteinium-253 at t=0 days, how much is lef...

casi 9 años ago

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newRMS

find root mean square of a signal x in less time than the test code and accurate to six places.

casi 9 años ago

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More luck than brains

Give a random function that guess and return numbers from 1 to 6 exactly like the test suite .

casi 9 años 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...

casi 9 años ago

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Basics: 'Find the eigenvalues of given matrix

Find the eigenvalues y for a given matrix x.

casi 9 años ago

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Sort numbers by outside digits

Sort the array so that they are sorted as if their value was a 5 digit number made from the first three and last two digits of t...

casi 9 años ago

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Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4

Example: in = magic(5) in = 17 24 1 8 15 23 5 7 14 16 4 6 13 20 ...

casi 9 años ago

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Insert zeros into vector

Insert zeros after each elements in the vector. Number of zeros is specified as the input parameter. For example: x = [1 ...

casi 9 años ago

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What's Your BMI?

Find the body mass index. For reference, please refer to Wikipedia here: <http://en.wikipedia.org/wiki/Body_mass_index body ...

casi 9 años ago

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Reverse the elements of an array

Reverse the order of elements in an array: eg: input X = [ 1 2 3 ; 4 5 6 ; 7 8 9 ] o...

casi 9 años ago

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Replace multiples of 5 with NaN

It is required to replace all values in a vector that are multiples of 5 with NaN. Example: input: x = [1 2 5 12 10 7] ...

casi 9 años ago

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Simple Decoder Ring

The stereotypical _decoder ring_ is remembered as a cereal box prize from the 1950s. Kids learned about cryptography by startin...

casi 9 años ago

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Cody Computer Part 4 : Are you a morning Cody player Addicted ?

This is a stupid Cody challenge. You just have to *click "Submit" between 7 and 9 AM.* ... Greenwich Mean Time (GMT). To see ...

casi 9 años ago

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does it touch ?

given a sentence, tell how much it touches. input : string output : how much it touches touching : a bilabial phoneme d...

casi 9 años ago

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7 segment LED display

Given a whole number, output how many segments would be lit up to display it on a 7 segment LED display (http://en.wikipedia.org...

casi 9 años ago

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System of equations

Find a solution to a system of equations represented by a |n| by |n+1| matrix. For instance, [ 2 0 4; => 2*x = 4 ...

casi 9 años ago

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The Answer to Life, the Universe, and Everything

A variation of a previous Hitchhiker's Guide to the Galaxy problem. *Inputs:* Life, the Universe, and Everything *Output:*...

casi 9 años ago

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Convert from Base 10 to base 5

Convert the input number from base 10 into base 5: for example: if a(in base 10)= 5 then a(in base 5)= 10

casi 9 años ago

Solved

Find indices of multiple minima in a vector

I have a vector, say: x= [ 1 5 6 2 6 1 3 5 1] Now I would like to get the index of the minimum values in this vector. When...

casi 9 años ago

Solved

Replicate elements in vectors

Replicate each element of a row vector (with NaN) a constant number of times. Examples : n=2, A=[1 2 3] -> [1 1 2 2 3 3] n=0...

casi 9 años ago

Solved

Set defaults

Write a function that computes the volume of a cube. The function should be able to accept three inputs: the length, width, and...

casi 9 años ago

Solved

sum of non-primes

The sum of the non-primes below 10 is 1+4+6+8+9+10=38 Find the sum of all the non-primes below the input, N.

casi 9 años ago

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Back to basics 18 - justification

Covering some basic topics I haven't seen elsewhere on Cody. Given a string with extra spaces in front and/or in back, return...

casi 9 años ago

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Fill a zeros matrix

The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...

casi 9 años ago