David Hill

Last seen: Today | Active since 2017

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Electrical Engineering with minors in Computer Science, Mathematics, and Creative Writing.

Working as Undergraduate Research Assistant in the field of Computational Photonics

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expand intervals vol.3
This is the next problem after <http://www.mathworks.co.uk/matlabcentral/cody/problems/2528 2528> and <http://www.mathworks.co.u...

ongeveer 13 uur ago

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return row and column indices given 2 values which define a range
Inspired by problem <http://www.mathworks.co.kr/matlabcentral/cody/problems/856-getting-the-indices-from-a-matrice> Inputs: - ...

ongeveer 13 uur ago

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Max Change in Consecutive Elements
If an array is given as input then find the index of consecutive elements that represent maximum change. Example: Input ...

ongeveer 16 uur ago

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remove single elements
Given a vector of integers, remove the elements that have appeared only once. The output elements should be in exact order as th...

ongeveer 16 uur ago

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Still more miles to go before I sleep
It's time for more odometer fun. Last problem, my car's odometer hit 56789. It's coming up on 111111 now, which (barring a maj...

ongeveer 19 uur ago

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Permutation Via Multiplication
Given two numbers a and b, determine if the product ab is a permutation of the digits of a. For example, this is always true for...

ongeveer 20 uur ago

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Smallest n, for n! to have m trailing zero digits
For given positive integer n, its factorial often has many trailing zeros, in other words many factors of 10s. In order for n! t...

ongeveer 20 uur ago

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The number of trailing zero digit of a factorial
For given positive integer n, take factorial of that number. How many trailing zeros does it have? Example: factorial(11) = 3...

ongeveer 20 uur ago

Answered
Difference Calculation between current value and a specified prior value
Not sure exactly what you are after, an example would be helpful. B=(x(1:10)-x(10:19))./x(10:19);

ongeveer 21 uur ago | 0

Answered
Count the number of times a value repeats between certain rows in a matrix.
A=[2,5,15,65,102;2,65,1,105,55;65,104,15,19,5]; i=A(1,ismember(A(1,:),A(2,:)));

ongeveer 21 uur ago | 0

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Sum of two number using (regexp, varargin) comand?
Sum two number a &b and get there result in c using the rexp and varargin comand.

ongeveer 23 uur ago

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why doesnt it work
function x = ss_dtmf(number,dt,nd,np) x=[]; for i=1:length(number) x = [x,ss_dtmf1(number(i),0:nd:dt),ss_dtmf1(12,0:np:dt...

1 dag ago | 0

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Split a vector into 2 oscillating vectors?
v1=zeros(1,500000); v2=zeros(1,500000); for k=1:100 v1((k-1)*5000+1:k*5000)=v((2*(k-1))*5000+1:(2*(k-1)+1)*5000); v2((k-...

1 dag ago | 0

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count upper and lower case characters
In a given input string, count and return the number of upper and lower case characters as u and l respectively. For example:...

1 dag ago

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convert the number to binary format & count digits
Convert the given number to the corresponding binary format and count the number of digits in that binary number

1 dag ago

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Basic Quadratic Equation
Create the equation: y=(3x)^2+(5x)+35 and compute y for various values of x

1 dag ago

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Raise each element to the power of its index in a matrix
In a matrix, A = [1,2;3,4] raise the power of each element like: 1^1+2^3+3^2+4^4 and add it all to produce the result 274

1 dag ago

Solved

Percentage of zeros in a matrix of only 1s and 0s
Write a function called _zero_stat_ that takes a matrix as an input that only has 0 and 1 elements. The function needs to comput...

1 dag ago

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Nth root of a number
Given an input and a number N, find the Nth root of the number(s)

1 dag ago

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Check if there are white spaces in the input string
If there are white spaces in the input string, output=1 else 0

2 dagen ago

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function to compute root mean square of first nn positive odd integers
Write a function called odd_rms that returns orms, which is the square root of the mean of the squares of the first nn positive ...

2 dagen ago

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short or buy ? take the opportunity
you had already calculated a theoretical stock value, now you checked in bloomberg the quoted price of that stock and you have t...

2 dagen ago

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Jack's hand in "Titanic" ♤
Given a series of cards, return true if it's the famous hand. Note that i pretend that poker cards goes from 1 to 10 so be care...

2 dagen ago

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Portfolio diversification: choose your stocks !
we have the returns of 3 stocks for the last 4 years and we have to combine only 2 stocks that are less correlated. Example: st...

2 dagen ago

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basic finance application
i watch bloomberg everyday and i want to estimate a stock price stability, so i have to calculate the momentum & the rate of cha...

2 dagen ago

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continuous compounding
what's the present value of having 100 dollars after n years given a continuously compounded rate i ? keep only 2 decimals pleas...

2 dagen ago

Solved

Matrix to vector transformation
given a matrix, make in the output 1 column vector putting odd numbers in ascending order after that put the even numbers in des...

2 dagen ago

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remove every row&col for every nan
for a given matrix, remove the row and column of every nan. Example x=[1 2 NaN 4 5 6 7 8 ...

2 dagen ago

Solved

what's my tax amount this year ?
given an annual salary x and a tax rate i calculate the amount that you have to pay.Example x = 70000; i=.10 y_correc...

2 dagen ago

Solved

List the dopey numbers
If vile numbers have binary representations that end with an even number of zeros (even vile), then numbers with binary represe...

3 dagen ago

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