# Sean Kavanagh

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**Content Feed**

Solved

Full combinations

Given n input vectors x1, x2, …, xn, generate a p*n matrix y whose rows contain all element-wise combinations of the vectors x1,...

3 years ago

Solved

So many choices

For inputs _n_ and _k_ (in that order), output the number of ways that k objects can be chosen from amongst n distinct objects. ...

3 years ago

Solved

Create all combinations of vectors

This function exists in the Neural Network Toolbox but is not available in Cody. Can you write such a function? See <http://...

3 years ago

Solved

Lowest sum from a group of digits

Hi there. It's James's daughter here again, and my third grade math teacher is up to her old tricks. This time, she's giving u...

3 years ago

Solved

Factorial: Unlimited Size : java.math

This challenge is an application of java.math that allows unlimited precision calculations. The primary reference sites are <ht...

3 years ago

Solved

Kurchan 5x5 - Optimal Score

Related to Problems 1646 and 2650, but bigger. Technically, all you need to do for this Cody problem is input a 5x5 matrix conta...

3 years ago

Solved

Kurchan 4x4 - Optimal score

Related to Problem 1646, but bigger. Technically, all you need to do for this Cody problem is input a 4x4 matrix containing the...

3 years ago

Solved

Kurchan 3x3 - Optimal Score

Find an optimal 3x3 Kurchan square, score of 198. A 3x3 Kurchan square has values 1:9.The products of each row, column, diag...

3 years ago

Solved

Kurchan Square - Evaluation Function

Evaluate a Kurchan square. An NxN square with values 1:N^2. Given a square matrix determine the products of each row, column,...

3 years ago

Solved

What can you get for exactly amount of money(harder)

Inspired by "Problem 42996. what can you get for exactly amount of money" <https://ww2.mathworks.cn/matlabcentral/cody/problems...

3 years ago

Solved

what can you get for exactly amount of money

You go to store, where each product has price. Prices are in vector s = [ 195 125 260 440 395 290] and you have amount ...

3 years ago

Solved

Exponents in Factorials

It's time to get excited about numbers!!! Well, we're just dealing with factorials here, but it's still a good reason to get ex...

3 years ago

Solved

Highest powers in factorials

This is the inverse of the problem <https://www.mathworks.com/matlabcentral/cody/problems/44747 Exponents in Factorials>. Inste...

3 years ago

Solved

Generate binary combinations for a given number of bit(s)

Generate the binary combination as in the example below. Example: If you are given: bin_comb(2) The answer will be: ...

3 years ago

Solved

Number of cyles and fixed points in a permutation

A permutation can be constructed from one or more sets of elements in cyclic order. A permutation in a single row vector form ...

3 years ago

Solved

Break it up! Break it up!

You have N pennies. Write a Matlab script that will reveal how many different ways you can break up those pennies. For example...

3 years ago

Solved

Project Euler: Problem 18, Maximum path sum I

By starting at the top of the triangle below and moving to adjacent numbers on the row below, the maximum total from top to bott...

3 years ago

Solved

Find the path through the cell

A list of cells is given. Return true if the elements of the list increase monotonically (each element is strictly larger tha...

3 years ago

Solved

Yet Another Path Finder

Assume there is a rectangular grid of points. These points are indicated by linear indices in a MATLAB-fashion. Some of the grid...

3 years ago

Solved

possible ways through matrix

This problem is inspired from problem 2405 <https://www.mathworks.com/matlabcentral/cody/problems/2405-the-number-of-ways>. C...

3 years ago

Solved

The Number of Ways

Find all the possible ways to reach the end of a matrix. So given [a b c d] the possible ways [a c],[a d],[b c],[b ...

3 years ago

Solved

How many rectangles in a grid ?

How many rectangles are there in an m × n grid ? For example, if m=1 & n=2, we have 3 rectangles.

3 years ago

Solved

Which way to go?

Given an m*n grid, How many ways are there to go from upper left corner to the lower right one? You can only move right...

3 years ago

Solved

Number of paths on a n-dimensional grid

This problem is inspired by <https://www.mathworks.com/matlabcentral/cody/problems/1483-number-of-paths-on-a-grid> and <https:/...

3 years ago

Solved

Number of paths on a 3d grid

This problem is inspired by <https://www.mathworks.com/matlabcentral/cody/problems/1483-number-of-paths-on-a-grid>, which you mi...

3 years ago

Solved

Number of paths on a grid

Consider a grid formed by n vertices vertically down, and m vertices horizontally right. Your starting point is at the top lef...

3 years ago

Solved

Path of least resistance - Move all direction

Extension of the wonderful <https://www.mathworks.com/matlabcentral/cody/problems/1049-path-of-least-resistance Problem 1049> (P...

3 years ago

Solved

Path of least resistance

Find the length of the shortest path through the matrix from the top left to bottom right corner. You may move right, down, or d...

3 years ago

Solved

N-th permutation.

Let write some permutations of positive integers. 1: 1 2 3 4 5 6 ... 2: 2 1 3 4 ... 3: 1 3 2 4 ... ...

3 years ago

Solved

Which permutation is it?

Let write some permutations of positive integers. 1: 1 2 3 4 5 6 ... 2: 2 1 3 4 ... 3: 1 3 2 4 ....

3 years ago