Added the answer to Problem 12

ProjectEuler/Problem12.m

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+%ProjectEuler/Problem12.m
+%This is a script to answer Problem 12 for Project Euler
+%What is the value of the first triangle number to have over five hundred divisors?
+
+%Setup your variables
+counter = 3500;	%To hold the current number you have counted up to
+number = 0;		%To hold the current triangle number
+found = false;	%To tell when the answer has been found
+numDivisors = 0;
+maxDivisors = 0;
+maxCounter = 0;
+
+
+startTime = clock();
+while(~found)
+	%Get your next triangle number
+	number = sym(sum([1:counter]))
+
+	%See if it has 500 divisors
+	numDivisors = size(divisors(number))(2)
+	if(numDivisors > maxDivisors)
+		maxDivisors = numDivisors
+		maxCounter = counter
+	end
+	if(numDivisors > 500)
+		found = true;
+	else
+		counter = counter + 1
+	end
+end
+endTime = clock();
+
+%Print your result
+totalTime = etime(endTime, startTime)
+topNumber = counter
+double(number)
+
+%Cleanup your variables
+clear counter;
+clear number;
+clear found;
+clear topNumber;
+clear startTime;
+clear endTime;
+clear totalTime;
+clear numDivisors;
+clear maxDivisors;
+clear maxCounter;
+
+%This will take 6-7 hours to run. I got the C++ answer in 2.8 seconds
+%Try to find a more efficient way to run this