% Recently, I have to deal with serious issue with investment.
% This program helps me understand more about the risk involved!

capital = 100; % assume that I start with 100 SGD

lowGain = 10;
lowLose = 2;
highGain = 100;
highLose = 50;

lowRisk(1) = capital; % I start with the same money on year 1!
highRisk(1) = capital;
normalSaving(1) = capital;
rand('state',0); % I force the sequence of random numbers to be the same every time!

for time = 2:25;
  lowRisk(time) = lowRisk(time-1) + rand() * lowGain - lowLose;
  highRisk(time) = highRisk(time-1) + rand() * highGain - highLose;
  normalSaving(time) = 1.025 * normalSaving(time-1); % just 2.5 percent every year
end

% We have the data.
% Now, plot it :)

% bla bla bla...