mu chance or much chance ?

日々の戯れ言

Project Euler 2

  • 問題

Problem 2:Even Fibonacci numbers
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.

  • 解答例
kf1 = 1
kf2 = 2
sum = 2

while (kf1 + kf2) < 4000000:
    kf3 = kf1 + kf2
    if kf3 % 2 == 0:
        sum += kf3
    kf1, kf2 = kf2, kf3

print(sum)

Project Euler 1

Python3勉強のために,

Project Eulerを解いてみました.

projecteuler.net

  • 問題

Problem 1:Multiples of 3 and 5
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.

  • 解答例
sum = 0

for i in range(1, 1000):
    if i % 3 == 0 or i % 5 == 0:
        sum += i

print(sum)

gnuplot

仕事でgnuplotを使う必要になり,インストールしました.

osx + aquaterm出力での話です.

sourceforge.net


でAquaTermをダウンロードしてインストールします.

brew install gnuplot --with-aquaterm
gnuplot

とすれば,

Terminal type set to 'aqua'

となり,aquatermでのプロットが可能になります.