# Nadee Seneviratne

### MathWorks

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Solved

Matrix with different incremental runs

Given a vector of positive integers a = [ 3 2 4 ]; create the matrix where the *i* th column contains the vector *1:a(i)...

mer än 2 år ago

Solved

Set some matrix elements to zero

First get the maximum of each *row*, and afterwards set all the other elements to zero. For example, this matrix: 1 2 3 ...

mer än 2 år ago

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surrounded matrix

With a given matrix A (size m x n) create a matrix B (size m+2 x n+2) so that the matrix A is surrounded by ones: A = [1 2 ...

mer än 2 år ago

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Tiling a matrix

Given a matrix and a number of columns, replicate matrix in a single row

mer än 2 år ago

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Concatenate matrix into 4 quadrants for given number of iteration

If given a matrix and number, output should be its concatenation like wavelet for given number of iterations. Example a ...

mer än 2 år ago

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Square wave average calculation

Given its peak and duty cycle, calculate avg value of square wave

mer än 2 år ago

Solved

Make an awesome ramp for a tiny motorcycle stuntman

Okay, given a vector, say v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 3 6 9 11 0; 6 9 ...

mer än 2 år ago

Solved

Calculate value of capacitor

Given the value of resistance and time at which capacitor charges to it's 99%. calculate the value of capacitor

mer än 2 år ago

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Back to basics 23 - Triangular matrix

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

mer än 2 år ago

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Calculate distance travelled when given radius and rotations

When given radius of wheel and number of rotations calculate total distance travelled consider pi=3.14

mer än 2 år ago

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Back to basics 21 - Matrix replicating

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

mer än 2 år ago

Solved

Divisible by n, prime divisors - 11, 13, 17, & 19

Divisibility checks against prime numbers can all be accomplished with the same routine, applied recursively, consisting of add ...

mer än 2 år ago

Solved

Divisible by n, prime divisors from 20 to 200

Pursuant to the previous problem (linked below), this problem requires a function that checks for divisibility of large numbers ...

mer än 2 år ago

Solved

Remove the air bubbles

Given a matrix a, return a matrix b in which all the zeros have "bubbled" to the top. That is, any zeros in a given column shoul...

mer än 2 år ago

Solved

Divisible by n, Composite Divisors

Pursuant to <http://www.mathworks.com/matlabcentral/cody/problems/42453-divisible-by-n-prime-vs-composite-divisors Divisible by ...

mer än 2 år 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...

mer än 2 år ago

Solved

Divisible by n, Truncated-number Divisors

Some divisors only require a few numbers at the end of the number in question to determine divisibility, no matter how long. Exa...

mer än 2 år ago

Solved

Divisible by n, prime divisors (including powers)

For this problem, you will be provided an array of numbers (not necessarily in order). Return the array of numbers with only pri...

mer än 2 år ago

Solved

Divisible by n, prime vs. composite divisors

In general, there are two types of divisibility checks; the first involves composite divisors and the second prime divisors, inc...

mer än 2 år ago

Solved

Divisible by 14

Write a function to determine if a number is divisible by 14. If a number is <http://www.mathworks.com/matlabcentral/cody/proble...

mer än 2 år ago

Solved

Divisible by 15

Write a function to determine if a number is divisible by 15. If a number is <http://www.mathworks.com/matlabcentral/cody/proble...

mer än 2 år ago

Solved

Divisible by 12

Write a function to determine if a number is divisible by 12. Similar to the number six, this can be done by checking for divisi...

mer än 2 år ago

Solved

Divisible by 16

Write a function to determine if a number is divisible by 16. This can be done by a few different methods. Here are two: # If...

mer än 2 år ago

Solved

Divisible by 8

Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...

mer än 2 år ago

Solved

Divisible by 13

Write a function to determine if a number is divisible by 13. Similar to the number seven, this can be done by a few different m...

mer än 2 år ago

Solved

Divisible by 7

Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...

mer än 2 år ago

Solved

Divisible by 6

Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...

mer än 2 år ago