Community Profile

# Cheuk

### Texas A&M University

25 total contributions since 2014

Nuclear Engineering PhD Candidate, Center for Large Scale Scientific Simulations
Professional Interests: numerical methods, high-power computing, programming (Matlab, C++, Python), nuclear physics, radiation transport

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Solved

Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

oltre 6 anni ago

Solved

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

oltre 6 anni ago

Solved

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

oltre 6 anni ago

Solved

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

oltre 6 anni ago

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

oltre 6 anni ago

Solved

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

oltre 6 anni ago

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

oltre 6 anni ago

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

oltre 6 anni ago

Solved

Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

oltre 6 anni ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

oltre 6 anni ago

Solved

Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

oltre 6 anni ago

Solved

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

oltre 6 anni 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 ...

oltre 6 anni 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...

oltre 6 anni ago

Solved

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

oltre 6 anni ago

Solved

Given a and b, return the sum a+b in c.

oltre 6 anni ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

oltre 6 anni ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

oltre 6 anni ago

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

oltre 6 anni ago

Submitted

1D Finite Element Method (FEM) Example
A 1D finite element method (FEM) example is provided to teach the basics of using FEM to solve PDEs.

Submitted

Gaussian Elimination with Pivoting Method
Function uses Gauss elimination with pivoting to solve a linear system in standard format.

Submitted

Compressed Row Storage (CRS) Successive Over-Relaxation (SOR) Method
Function uses Successive Over-Relaxation (SOR) method to solve a linear system in CRS format

Submitted

Compressed Row Storage (CRS) Gauss-Seidel Method
Function uses Gauss-Seidel method to solve a linear system in CRS format

Submitted

Compressed Row Storage (CRS) Jacobi Method
Function uses Jacobi method to solve a linear system in CRS format