#projecteuler

I have known about Project Euler for some time now but I have never actually gotten about solving them. I figured they were all super simple and are not a big deal, but last week I thought of incorporating coding into my daily schedule. I should be doing it already since I am currently pursuing Software Engineering and I have to go through a rigourous placements procedure. But better late then never I guess. So yea, I just started, lets' see how long it takes for me to have more yellow boxes than white.

i’m so happy for y'all!

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:

1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...

By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.

나의 풀이

https://gist.github.com/Elbry/fb911cc685956b50d415874cc5081fc7

프로그래머들이 문제해결능력을 기르는 데 활용할 수 있는 문제들을 아카이빙해 놓은 프로젝트 오일러. 가급적이면 1주일에 5일 정도는 한 문제씩 풀어보려고 한다.

첫 문제는 다음과 같다.

"If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9.

The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000."

즉, 1000 미만의 수 중 3의 배수이거나 5의 배수인 수들을 모두 더한 합이 얼마인지를 묻는 문제다.

나는 다음과 같이 풀었다.

https://gist.github.com/Elbry/b57cd4de408bff90a0cf6b13e5d21137

그런데 풀고 나서 보니,

Temp라는 변수는 굳이 필요하지 않았다. 그때그때 Sum에다가 i를 바로 넣어줬어도 되는 거니까.

처음에 컴파일했을 때 답을 맞추지 못했는데, Temp=i를 넣어야 할 자리에 Temp=1을 넣었기 때문이다. 이상한 실수...

프로젝트 오일러 포럼에 나와 있는 답들을 보는데, 워낙 다양한 프로그래밍 언어로 풀기도 하고 아직 내가 모르는 문법들이 많다 보니 사실 알아보기가 힘들다.

whew - finally completed the pre-course work for GA! tons of work more to do before i even get vaguely familiar with working things out on python, but i must say it has been an eye-opener. the statistic parts were particularly difficult! i did enjoy the challenge of wrapping my head around the concepts but i definitely need to get my fundamentals right - so many times i was guessing what to input!

another rock to surmount is i think my inability to yet fully visualise what i am doing with the data before the final step (due to my weak basics i must imagine).

on a brighter note, having cleared all the fundamentals (definitely still need practice though) - i am now free to play around! there’s ProjectEuler.Net and Hackerrank for practice problems - exciting times ahead!!!

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