# William

Semi-retired physicist with interests in numerical modeling and mathematics.

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**Content Feed**

Solved

Sort Non-zeros

Consider 0s in a vector creates a break-point. sort all the sub-arrays created by those break points. For example, a = [3, 4, 1...

3 giorni ago

Solved

Chain multiplication - 01

Say, you are given two matrices - A (shape= 3*4) and B(shape = 4*5). If you multiply these two matrices, the resultant matrix w...

3 giorni ago

Solved

Cut the rod

A rod of length n can be cut in different sizes. Different price is associated with different length of cuts. length, len= [1,...

3 giorni ago

Solved

Make a function that returns its own character count

Write a function that returns a 128 element vector with an accurate inventory of the ASCII characters in its own function file. ...

9 giorni ago

Solved

Functionality 1

It's all about functionality. *Cheating is allowed but not required*

10 giorni ago

Solved

Travelling Salesman Problem (TSP)

Find a short way through given points. This is the travelling salesman problem. But the solution should be a fast and small func...

10 giorni ago

Solved

PACMAT - Ghosts Random; 3 Lives

The Classic PACMAN game brought to Cody. PACMAT Ghosts Random requires clearing the board of Yellow Dots while not bumping in...

12 giorni ago

Solved

Convert base 10 to base x (2-16)

Convert input number(s) (cell array of character arrays) in base 10 to base x (2 through 16). Output should be a cell of charact...

15 giorni ago

Solved

Partial sorting algorithm

Return the top k elements of an input vector. A comparison function compareFcn(m,n) is provided to compare individual elements o...

15 giorni ago

Solved

Cyclotomic polynomial

Given a Natural number (N), return the corresponding Cyclotomic Polynomial.

16 giorni ago

Solved

List the semiprimes

A semiprime number—or a 2-almost prime—is the product of two prime numbers. The numbers and are semiprimes, but and are not....

16 giorni ago

Solved

Remove TeX from string

Matlab’s TeX support in figure windows is great for displaying information in a visually appealing way. However, many of the TeX...

18 giorni ago

Solved

Inhomogenous Depth Scale Interpolation

I recently came across a dataset for physical ocean parameters such as temperature and salinity that provided data in the form o...

19 giorni ago

Solved

Convert double scalar to half-precision floating point (IEEE 754r)

Use MATLAB to convert a scalar double into a half-precision floating point. The return value should be a uint16. The half-pr...

25 giorni ago

Solved

Nuemann Polynomials

Return the coefficients of nth (n>=0) Nuemann polynomial, (a sequence in 1/t) as polynomials in alpha. The expected output is a...

circa un mese ago

Solved

Determine whether one vector is a subset of another

While bumbling through a pair of problems in the Number Theory group, I wrote code to determine whether a vector is a subset of ...

circa un mese ago

Solved

Scorer's Function

Evaluate the Scorer's function for a given input. The expected output is Gi(x). Note - The precision will vary for test cases...

circa un mese ago

Solved

Consecutive Pairs of Smooth Numbers from Set of Prime Numbers

Given an input set of prime numbers (p), generate all pairs of consecutive smooth numbers (x) (see Stormer's Theorem). For exam...

circa un mese ago

Solved

Can you Jump?

You have been provided with input array of integers. You start with initial position at the first index of this input array, and...

circa un mese ago

Solved

Ridge regularized linear regression

Given a predictor data matrix of size , target variable vector of size and a shrinkage factor (scalar) (ridge regularization...

circa un mese ago

Solved

Momentum Calculation

A shopping cart of mass 'm1' is traveling with velocity 'u' and collides with a second shopping cart of mass 'm2.' The two shopp...

circa un mese ago

Solved

B-Zuckerman Numbers

Similar to my last problem (B_Harshad Numbers), B-Zuckerman Numbers are numbers that are divisable by the product of their digit...

circa un mese ago

Solved

Calculate Percentage

Given marks obtained and total marks, calculate the percentage.

circa un mese ago

Solved

Find distance travelled by an object starting from rest in time 't' and linear acceleration 'a' = 3t

Find distance travelled by an object starting from rest in time 't' with linear acceleration a = 3t. You are given time t as an ...

circa un mese ago

Solved

Aerodynamic load on a vehicle

Determine the aerodynamic load on a vehicle having aerodynamic drag coefficient , frontal area , moving at speed in an environm...

circa un mese ago

Solved

Find all prime factors of the input

Given an input x, find its all prime factors. Return the vector with all factors in ascending order. Efficiency is the key here...

circa un mese ago

Solved

Sum of 2 numbers in array

Given an array and a target sum, return true if any 2 numbers in the array sum up to the given target sum. Both numbers cannot h...

circa un mese ago

Solved

Zigzag array

Given an vector of integers, rearrange the array so that the array looks like: [largest value, smallest value, 2nd largest valu...

circa un mese ago

Solved

Exponent of IEEE Single

Output the exponent bits as a uint8 of the IEEE representation of the single-typed 32-bit float input.

circa un mese ago