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Joseph Pauwels


Active since 2014

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Reverse a matrix
Its simple. You have to reverse a given matrix.

nästan 10 år ago

Solved


Reverse Concatenation
Suggest methods to form a Matrix after deleting one of the input's elements. Input should be element's position and output shou...

nästan 10 år ago

Solved


Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

nästan 10 år ago

Solved


Find the square of the sum of the digits of a number
If a number (n) is provided as an input, find the square of the sum of the digits of the number. Example If n = 21, the an...

nästan 10 år ago

Solved


Multiply a column by a row
* Given a column vector C and and a row vector R. * Output a matrix M. * Every column of M equals to C multiplied by correspon...

nästan 10 år ago

Solved


Find the dimensions of a matrix
Just find the number of columns of the given matrix. Example x = [1 2 3 4 5 6] y = 2

nästan 10 år ago

Solved


Project Euler: Problem 10, Sum of Primes
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below the input, N. Thank you <http:/...

nästan 10 år ago

Solved


Project Euler: Problem 6, Natural numbers, squares and sums.
The sum of the squares of the first ten natural numbers is, 1^2 + 2^2 + ... + 10^2 = 385 The square of the sum of the first ...

nästan 10 år ago

Solved


Getting the indices from a vector
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to <http://www.mathworks....

nästan 10 år ago

Solved


Get the length of a given vector
Given a vector x, the output y should equal the length of x.

nästan 10 år ago

Solved


First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

nästan 10 år ago

Solved


Back to basics 22 - Rotate a matrix
Covering some basic topics I haven't seen elsewhere on Cody. Rotate the input matrix 90 degrees counterclockwise (e.g. [1 2; ...

nästan 10 år ago

Solved


Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

nästan 10 år 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...

nästan 10 år ago

Solved


Sum of diagonal of a square matrix
If x = [1 2 4; 3 4 5; 5 6 7] then y should be the sum of the diagonals of the matrix y = 1 + 4 + 7 = 12

nästan 10 år ago

Solved


Create a row array using double colon operator
Create a row array from 9 to 1, using the double colon operator.

nästan 10 år ago

Solved


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

nästan 10 år ago

Solved


Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

nästan 10 år ago

Solved


Arrange Vector in descending order
If x=[0,3,4,2,1] then y=[4,3,2,1,0]

nästan 10 år ago

Solved


Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

nästan 10 år ago

Solved


Circle area using pi
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

nästan 10 år ago

Solved


Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

nästan 10 år ago

Solved


Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

nästan 10 år ago

Solved


Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

nästan 10 år ago

Solved


Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

nästan 10 år ago

Solved


Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

nästan 10 år ago

Problem


Reverse the input
Given an input (n), produce an output in the reverse order with out using string variables or string function. Example x ...

nästan 10 år ago | 0 | 88 solvers

Solved


Reverse the input
Given an input (n), produce an output in the reverse order with out using string variables or string function. Example x ...

nästan 10 år ago

Solved


Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

nästan 10 år ago

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

nästan 10 år ago

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