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jinjin lee


Last seen: 2 months ago Active since 2020

Geometry Fractal GIS

Programming Languages:
MATLAB
Spoken Languages:
Chinese
Professional Interests:
Fractals

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MagicRule
MagicRule is a highly intellectual toy, Let's explore it together!

6 months ago | 6 downloads |

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Solved


Throwing Dice - Will You Be Eaten By The Dragon?
You and a dragon have agreed to let dice rolls determine whether it eats you or not. The dragon will roll a single die, of x ...

1 year ago

Solved


Chess probability
The difference in the ratings between two players serves as a predictor of the outcome of a match (the <http://en.wikipedia.org/...

1 year ago

Solved


Make a Plot with Functions
Make a plot and test

1 year ago

Solved


Smallest distance between a point and a rectangle
Given two points *x* and *y* placed at opposite corners of a rectangle, find the minimal euclidean distance between another poin...

1 year ago

Solved


Project Euler: Problem 5, Smallest multiple
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smalle...

1 year ago

Solved


Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

1 year ago

Solved


Project Euler: Problem 2, Sum of even Fibonacci
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 te...

1 year ago

Solved


The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

2 years ago

Solved


Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

3 years ago

Solved


Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

3 years ago

Solved


Converts numbers into characters
Converts numbers into characters

3 years ago

Solved


Find the max element of the array
Find the max element of the array

3 years ago

Solved


Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

3 years ago

Solved


Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

3 years ago

Solved


to the 2 all elements
to the 2 all elements

3 years ago

Solved


the average value of the elements
Calculate the average value of the elements in the array

3 years ago

Solved


Double all elements in the array
Duplicate all elements in the array

3 years ago

Solved


calculate the length of matrix
input 1 array, calculate the length

3 years ago

Solved


Draw a '0' in a one matrix!

3 years ago

Solved


Clockwise or Counterclockwise
Given a list of 2-d points defining the vertices of a polygon, determine whether these points are sorted clockwise. The input...

3 years ago

Solved


Covering area
As an extension of the problem <http://www.mathworks.com/matlabcentral/cody/problems/416-polygon-area>, find the area, bounded b...

3 years ago

Solved


Spherical radius given four points
Determine the radius of a sphere provided four non-coplanar points on the surface of the sphere. pts = [x1 y1 z1; x...

3 years ago

Solved


Great Circle Distance
Find shortest between two points on a ball given their azimuthal and polar angles (in degrees) as well as the radius of the sphe...

3 years ago

Solved


Right and wrong
Given a vector of lengths [a b c], determines whether a triangle with those sides lengths is a right triangle: <http://en.wikipe...

3 years ago

Solved


Are you in or are you out?
Given vertices specified by the vectors xv and yv, and a single point specified by the numbers X and Y, return "true" if the poi...

3 years ago

Solved


Circumscribed circles
Given the lengths of the 3 sides of a triangle, output the radius of the circumscribed circle. Example: [3 4 5] -> 2.5

3 years ago

Solved


Similar Triangles - find the height of the tree
Given the height, h1, of a power pole, shorter than a tree, a given distance, x2 away, please find h2, height of the tree. Pleas...

3 years ago

Solved


Angle between two vectors
You have two vectors , determine the angle between these two vectors For example: u = [0 0 1]; v = [1 0 0]; The a...

3 years ago

Solved


Clock Hand Angle 1
Given a time in HH:MM:SS, find the smallest angle (in degrees) between the hour and minute hand

3 years ago

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