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Nearest
*Description* Find the value and index of the element in vector _x_ that is nearest to value _y_. _y_ should be able to be a ...

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First non-zero element in each column
For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero ...

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Is this matrix orthogonal?
Given a square matrix, a, determine whether it is orthogonal. INPUT: a, a n x n matrix OUTPUT: true or false

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Narcissistic number ?
Inspired by Problem 2056 created by Ted. In recreational number theory, a narcissistic number is a number that is the sum of ...

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Compute Fibonacci Number
Compute the _n_-th Fibonacci Number f(0) = 0, f(1) = 1, f(2) = 1, f(3) = 2, ... f(42) = 267914296

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

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Sum two real numbers
It seems easy, but... You cannot use +, -, plus, diff, cumsum, *, prod, times, etc.

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Vector parallel to plane?
Given the coefficients of the equation which defines a plane as follows: ax+by+cz=d, return a boolean indicating whether the 2n...

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Find the definite integral of various linear functions
A definite integral had a minimum and maximum limit. When you solve this type of problem you must use both quad and the trapz fu...

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Numeric array to cell array of strings (easy)
Given a numeric array (A) and a 1xk cell array of strings (C), return a cell array (B) that is the same size as A and in which e...

más de 9 años hace

Problema

How to permute given 3d matrix?
A(:,:,1)=[1 3] A(:,:,2)=[2 2] A(:,:,3)=[4 3] Change rows to columns and columns to rows, similar to transpose. Resul...

más de 9 años hace | 5 | 55 solvers

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Evil Number
Check if a given natural number is evil or not. Read more at <https://oeis.org/A001969 OEIS>.

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Problema

Removing vibration!
There are [y] that vary with [x] but y including small useless vibration. x=1:10 y=[1.71 2.03 3.28 4.05 5.10 6.82 7.69 8.3...

más de 9 años hace | 5 | 58 solvers

Resuelto

Variable Assignment
Complete the ? part by assigning myExamScore with 100.

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Problema

Extract a part of matrix!
There is matrix A A=[1 2 3; 4 5 6; 7 8 9] Extract a part of matrix A from (2,2) to (3,3). Result should...

más de 9 años hace | 6 | 81 solvers

Problema

Change string to number
Change given string to number. (hint: there is already function) Changing from ['1234'] to [1234] is one of example

más de 9 años hace | 5 | 228 solvers

Resuelto

Billiards
Considering there are 15 pool balls, (b), in the game of pool, and given a radius, (r). What is the volume, (V), of a rack in th...

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square a vector-Given the variable x as your input, square it and put the result in y.
function y = (x)squared y = x; end

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How long does it take to run a bath?
Given the *volume flow rate* (volume/time) of a faucet and the *volume* of a bath tub, find the amount of time it takes to fill ...

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Celsius to Kelvin
Degrees Celsius = Kelvin - 273.15

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Hydrogens in a Saturated Hydrocarbon
Given (c) carbon atoms in a saturated hydrocarbon molecule (all single bonds), how many hydrogen atoms (h) are in the molecule?

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Average Grade
Given a 1x5 vector presents the grades of a student on five tests. Calculate the average grade of that student.

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Sum of integers numbers
Sum of the numbers from 1 to 100

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solve for y that is half as much as three less than one tenth of x
function y = half(x) y = (x * .1); end

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vector to string
Determine what the ASCII characters spell out. Example: input = [ 72 73 71 72] output = 'HIGH'

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Alkane
Given a number, x, that is equal to the number of carbon atoms in an <http://en.wikipedia.org/wiki/Alkane alkane>, find, y, the ...

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Box!
Given a box, find the volume of the cube. With each side = a.

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Create a matrix X, where each column is a shifted copy of the vector v
Example : in->v = (1:5)'; 1 2 3 4 5 out-> [1 5 4 3 2;2 1 5 4 3;3 2 1 5 4;4 3 2 1 5;5 4 3 ...

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Resuelto

Create a vector
Create a vector from 0 to n by intervals of 2.

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Resuelto

Find the position of first minimum value in an integer array with numbers
If x = [2 6 4 9 10 3 1 5 1] the the output should be 7, because the first minimum value (1) lies at the 7th position.

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