# Are Mjaavatten

Retired physicist with background in the petroleum and process industry. My main interests are mathematical modelling, numerical methods, and thermodynamics.

**Statistics**

RANK**234**

of 271,325

REPUTATION**352**

CONTRIBUTIONS

**3** Questions

**121** Answers

ANSWER ACCEPTANCE **
100.0%
**

VOTES RECEIVED**73**

RANK**1,226** of 18,296

REPUTATION**1,439**

AVERAGE RATING**5.00**

CONTRIBUTIONS**11** Files

DOWNLOADS **197**

ALL TIME DOWNLOADS**10375**

CONTRIBUTIONS**0 Posts**

CONTRIBUTIONS**0** Public Channels

AVERAGE RATING

CONTRIBUTIONS**0** Highlights

AVERAGE NO. OF LIKES

**Content Feed**

Solved

Find out the Gray Code for a Given Binary Number

Find out <http://en.wikipedia.org/wiki/Gray_code Gray Code> for a given binary number Example Binary input 1000 Gray ...

20 hours ago

Solved

Big numbers, least significant digits

Given two numbers, x and n, return the last d digits of the number that is calculated by x^n. In all cases, d will be the number...

3 days ago

Solved

Digital Neighbourhood

Given a natural number reorder its digits to create another number, closest to the given one. Examples: * 123 gives 132, ...

4 days ago

Solved

Binary Neighbourhood

Given a natural number reorder its binary form to create another number, closest to the given one. Examples: * 1 gives 2, ...

4 days ago

Solved

There are 10 types of people in the world

Those who know binary, and those who don't. The number 2015 is a palindrome in binary (11111011111 to be exact) Given a year...

5 days ago

Solved

Evened up (or not)

You will be provided with an array or matrix that contains various numbers, in addition to an evening variable, e, set to 1 or 0...

5 days ago

Solved

De-primed

Write a function that will multiply every prime number in the array or matrix by two, leaving all other numbers the same, and re...

5 days ago

Solved

Big numbers, repeated least significant digits

This problem builds off of Problem 3077 Given an integer x which contains d digits, find the value of (minimum) n (n > 1) such ...

5 days ago

Solved

Mysterious digits operation (easy)

What is this digit operation? 0 -> 0 1 -> 9 121 -> 9 44 -> 6 15 -> 5 1243 -> 7 ...

6 days ago

Solved

Symmetry of vector

Determine whether the vector is symmetric or not (vector could be even or odd in length). For example: x = [1 2 3 3 2 1] is s...

8 days ago

Solved

Count consecutive 0's in between values of 1

So you have some vector that contains 1's and 0's, and the goal is to return a vector that gives the number of 0's between each ...

8 days ago

Solved

Is this number Munchhausen?

In this problem, simply return 1 if a supplied number is Munchhausen or 0 if not. Example 153 is narcissistic but not a Munchh...

8 days ago

Solved

Smith numbers

Return true if the input is a Smith number in base ten. Otherwise, return false. Read about Smith numbers at http://en.wikipedia...

8 days ago

Solved

Find Closest Constant

Given a number x, return the value that is closest to x from this list of constants: 0, 1, , e, , (also known as ). For exampl...

9 days ago

Solved

Armstrong Number

Determine whether the given input n-digit number is Armstrong Number or not. Return True if it is an Armstrong Number. An n-D...

13 days ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

13 days ago

Solved

Wayfinding 3 - passed areas

This is the third part of a series of assignments about wayfinding. The final goal of this series is to be able to calculate the...

17 days ago

Solved

Wayfinding 2 - traversing

This is the second part of a series of assignments about wayfinding. The final goal is to be able to calculate the fastest route...

17 days ago

Solved

Wayfinding 1 - crossing

This is the first part of a series of assignments about wayfinding. The final goal is to be able to calculate the fastest route ...

18 days ago

Solved

Better bullseye matrix

<http://www.mathworks.com/matlabcentral/cody/problems/18-bullseye-matrix Problem 18> asks to create a bullseye matrix like this:...

18 days ago

Solved

Matrix spiral

Make a spiral in a (n*n) matrix. The spiral has to start in the top left, and has to rotate clockwise to the center. The spiral ...

18 days ago

Solved

Spiral In

Create an m by n matrix filled with sequential integers starting from 1 and arranged in a counterclockwise spiral that hugs the ...

19 days ago

Solved

Create a patchwork matrix

This function will assemble a large matrix out of a number of smaller ones m1, m2, etc., according to a pattern P. If P is 3x5,...

22 days ago

Solved

Symmetric matrix

You must create a n-by-n *symmetric* matrix such that A(row,col) = row/col for col >= row. Example if n =3 : output is : ...

22 days ago

Solved

Spot the rectangle (Part 2)

This problem is related to the 17x17 challenge. See also Part 1 of this problem. Given a matrix in which each element is either ...

22 days ago

Solved

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 ...

23 days ago

Solved

Twist 'n' Match

Given n and m, construct an n-by-n matrix a such that a, when rotated 90 degrees and compared with itself, matches itself in exa...

24 days ago

Solved

Find the length of stream affected by a spill

When a contaminant is spilled into a stream, one might want to know how much of the stream is affected—e.g., the length over whi...

5 months ago

Solved

Solve an ODE: concentrations predicted by the cells-in-series model

One approach for predicting mixing and transport of contaminants in a river is the cells-in-series model. The model divides a ri...

5 months ago

Question

How do I create a table containing a character array if it has only one row?

This works fine: Time = [1;2];Force = [12;17];ID = ['ab';'cd']; T = table(Time,Force,ID) But this fails: Time = [1];Force = ...

9 months ago | 1 answer | 0