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58 lines
1.7 KiB
Matlab
58 lines
1.7 KiB
Matlab
function [] = Problem2()
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%ProjectEuler/Octave/Problem2.m
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%Matthew Ellison
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% Created: 03-28-19
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%Modified: 10-28-20
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%The sum of the even Fibonacci numbers less than 4,000,000
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%{
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Copyright (C) 2020 Matthew Ellison
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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%}
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%Setup your Variables
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fib = [1, 1, 2]; %Holds the Fibonacci numbers
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currentFib = fib(end) + fib(end - 1); %The current Fibonacci number to be tested
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evenFib = [2]; %A subset of the even Fibonacci numbers
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%Start the timer
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startTime = clock();
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while(currentFib < 4000000)
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%Add the number to the list
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fib(end + 1) = currentFib;
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%If the number is even add it to the even list as well
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if(mod(currentFib, 2) == 0)
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evenFib(end + 1) = currentFib;
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end
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%Set the next Fibonacci
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currentFib = fib(end) + fib(end - 1);
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end
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%Stop the timer
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endTime = clock();
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%Print the results
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printf("The sum of all even Fibonacci numbers less than 4000000 is %d\n", sum(evenFib))
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printf("It took %f seconds to run this algorithm\n", etime(endTime, startTime))
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end
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%{
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Results:
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The sum of all even Fibonacci numbers less than 4000000 is 4613732
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It took 0.000694 seconds to run this algorithm
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%}
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