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Lincoln Poon


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3.063 total contributions since 2020

A university student working his way through programming.

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Cache me Outside
The test suite includes a simple recursive Fibonacci sequence generator, but it's terribly inefficient. One simple method for im...

circa 5 ore ago

Solved


find a matrix D that contains the eigenvalues of A on its diagonal.

circa 15 ore ago

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Calculate the structural rank of a 2-by-4 matrix.

circa 15 ore ago

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Create a simple inline function y and compute its value at x = pi.

1 giorno ago

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Replace the last 3 x 3 submatrix of A

1 giorno ago

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Convert hex color specification to MATLAB RGB
Here's something that comes up all the time if you deal with web pages. Given a <http://www.w3schools.com/html/html_colors.as...

1 giorno ago

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Angle between two vectors
Given 2 pairs of _cartesian co-ordinates_, determine the angle between the 2 vectors formed by the _points_ and the _origin_. An...

1 giorno ago

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how many of the entries are positive?
Given x= sin(linspace(0,10*pi,100)), how many of the entries are positive?

3 giorni ago

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Combination of Vectors
Return a combination of vectors x1, x2 based on y1, y2 per: x(j) = 0 if y1(j) < y2(j) x(j) = x1(j) if y1(j)...

3 giorni ago

Solved


Hydrostatic Pressure
Given depth(height), in m, find the pressure under a body of water. Need to know the density of water(kg/m^3), and gravity(m/s^2...

3 giorni ago

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Determine if given number is perfect
A number is <http://en.wikipedia.org/wiki/Perfect_number perfect> if it is equal to the sum of its factors, excluding itself. ...

3 giorni ago

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Keep Only the Upper characters in a string
Keep Only the Upper characters in a string s = 'Sreeram Mohan'; output = SM;

3 giorni ago

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Find Elements in Range
Based on a question on <http://www.mathworks.com/matlabcentral/answers/ MATLAB Answers>. Find all the elements of a vector wh...

3 giorni ago

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How close to a hole
Suppose you have a description of good places (ones) and bad places (zeros). You want to know your distance from a bad place (in...

3 giorni ago

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find location of indexes

3 giorni ago

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Decrypt the cypher using XOR encryption (for beginners)
Inspired by Project Euler n°59 Each character on a computer is assigned a unique code and the preferred standard is ASCII (...

4 giorni ago

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The Birthday Phenomenon
First off, leap years are not being considered for this. In fact the year that people are born shouldn't be taken into considera...

4 giorni ago

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Make a Plot with Functions
Make a plot and test

4 giorni ago

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balance vector
Given a non-empty vector x with integer elements. x shall be called balance vector if one can split the elements of x into two g...

4 giorni ago

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solid of revolution
Given an real polynomial P and two real numbers a,b with 0<=a<=b. Calculate the volume of the solid of revolution made by rota...

4 giorni ago

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Find the area between curves (P4)

4 giorni ago

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Sorting integers by their digits (Level 3)
This is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/42811-sorting-integers-by-their-digits-level...

5 giorni ago

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Sorting integers by their digits (Level 2)
This is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/42809-sorting-integers-by-their-digits Probl...

5 giorni ago

Solved


Sorting integers by their digits (Level 1)
Given a vector, v, of positive integers, return a vector, w, by sorting v in ascending order, such that primary sorting is done ...

5 giorni ago

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Find the area between curves (P2)

5 giorni ago

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Find the area between curves (P1)

5 giorni ago

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find C of circle

6 giorni ago

Solved


Number Puzzle - 074

6 giorni ago

Solved


Number Puzzle - 084

6 giorni ago

Solved


Number Puzzle - 083

6 giorni ago

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