% DAILY DOWNTURN -> YOU NEED TO ADAPT FOR COMPUTING THE HIGHEST DOWNTURN

% read the file
% reading the file line by line
% getting the downturn
%   - get highest high(a) so far
%   - get the downturn using this value

YEAR = 1;
MONTH = 2;
DAY = 3;
OPEN = 4;
HIGH = 5;
LOW = 6;
CLOSE = 7;
VOLUME = 8;

data = load('djia.txt');

%%

start = 1;
finish = length(data);

highestHighSoFar = 0;
hightestRow = 0;

% we use this for obtaining max downturn 
highestDownturn = 0;

%We want the previous high price compared to today's low price
for i = start:finish
    % data line by line

    % downturn = low(b)/ high(a);
    % to get biggest downturn, I need the maximum high(a)
   
    highOnRowI = data( i, HIGH );
    if highOnRowI > highestHighSoFar
        highestHighSoFar = highOnRowI;
        highestRow = i;
    end
   
    biggestDownturnToRowI = (data(i, LOW) / highestHighSoFar)*100;
    
    % to get the highest downturn  I should replace the following lines with 
    % the finding of highest downturn. Thus, I will print the highest downturn after for loop

    fprintf('The high price on %d/%d/%d was %0.2f\n', ...
        data(highestRow, MONTH), data(highestRow, DAY), ...
        data(highestRow, YEAR), highestHighSoFar );
    fprintf('The low price on %d/%d/%d was %0.2f\n', ...
        data(i, MONTH), data(i, DAY), ...
        data(i, YEAR), data(i,LOW) );
    fprintf('That is %0.2f of the previous high\n\n\n', biggestDownturnToRowI );
    
    
    
end