Solved

Mysterious digits operation (easy)
What is this digit operation? 0 -> 0 1 -> 9 121 -> 9 44 -> 6 15 -> 5 1243 -> 7 ...

5 years ago

Solved

Arrange vector in ascending order
Arrange a given vector in ascending order. input = [4 5 1 2 9]; output = [1 2 4 5 9];

5 years ago

Solved

Test Problem; Create a 5x5 array containing all ones
This is a test for learning the process of creating a Cody problem. The goal of this test problem will be to create an array,...

5 years ago

Solved

Close MATLAB with keyboard
Close MATLAB with keyboard without using mouse

5 years ago

Solved

Determine if given number is perfect
A number is <http://en.wikipedia.org/wiki/Perfect_number perfect> if it is equal to the sum of its factors, excluding itself. ...

5 years ago

Answered
PID Time behavior of the maximum and minimum points
You can use PID Tuner App to set the PID gains.

5 years ago | 0

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

5 years ago

Answered
Wrong with matrix dimensions(lsim command)
In the input u, the dimensions are not properly assigned. Try: u=[5*t.^2+10;2*exp(t)+5;ones(size(t))];

5 years ago | 0

| accepted

Solved

Calculate square and cube of number
Calculate square and cube of number x

5 years ago

Solved

Tell me the slope
Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];

5 years ago

Solved

Sum the squares of numbers from 1 to n
For a given value of n return the sum of square of numbers from 1 to n. Example For n = 2 then sum of squares = 5 (1^2 + ...

5 years ago

Solved

square number
Square a number

5 years ago

Solved

Return 'on' or 'off'
When the input is true, return 'on', otherwise, return 'off'.

5 years ago

Solved

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

5 years ago

Solved

Find the hypotenuse
Given a and b (the two sides of a right-triangle), find c, the hypotenuse.

5 years ago

Solved

Add two numbers
Calculate the sum of two numbers. Example input = [2 3] output = 5

5 years ago

Solved

Back to basics 8 - Matrix Diagonals
Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector of numbers, output a square array with the...

5 years ago

Solved

convert matrix to single column
given any matrix, convert it to single column

5 years ago

Solved

Basics: 'Find the eigenvalues of given matrix
Find the eigenvalues y for a given matrix x.

5 years ago

Solved

Remove NaN ?
input -> matrix (n*m) with at least one element equal to NaN; output -> matrix(p*m), the same matrix where we deleted the enti...

5 years ago

Solved

Back to basics 1 - Saving
Covering some basic topics I haven't seen elsewhere on Cody. Given an input variable 'x', save it to disk in a file named 'co...

5 years ago

Solved

Volume of a box
Given a box with a length a, width b, and height c. Solve the volume of the box.

5 years ago

Solved

Average of square wave
given positive and negative peak , calculate dc level, 50% duty cycle

5 years ago

Solved

Find number of days
The input is two date in string format (dd-mm-yyyy) find out the number of days between these two dates. Example: input: ...

5 years ago

Solved

Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

5 years ago

Solved

Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...

5 years ago

Answered
How can I recognize symbolic value with actual value 0?
You need to specify custom tolerance. if abs(ans) < 1e-10 ans = 0; end You can specify your own tolerance instead of 1e-...

5 years ago | 0

Solved

Is this is a Tic Tac Toe X Win?
For the game of <https://en.wikipedia.org/wiki/Tic-tac-toe Tic Tac Toe> we will be storing the state of the game in a matrix M. ...

6 years ago

Solved

Spot the First Occurrence of 5
This problem series invites you to solve two simple problems related to the integer NUMBER FIVE, in order to celebrate <https://...

6 years ago

Solved

Write c^3 as sum of two squares a^2+b^2
write c^3 as sum of two squares a^2+b^2. a and b must be integer and greater than zero. For example 5^3 = 2^2 + 11^2 5...

6 years ago