roger35972134

def get_length(dna):
    
	lengh=len(dna)
	return lengh
def is_longer(dna1, dna2):
    """ (str, str) -> bool

    Return True if and only if DNA sequence dna1 is longer than DNA sequence
    dna2.

roger35972134

def main():
    列出巴斯卡三角形()
    畫出二項分佈()
    畫出巴松分佈()

def 列出巴斯卡三角形():
    Z=[[bCoef(n,k) for k in range(n+1)] for n in range(20)]

    for z in Z: print(z)

roger35972134

import itertools
 
def main():
 
    print(__doc__)
     
    排假(1, True)
    排假(2, True)
    排假(3)
    排假(4)

roger35972134

from matplotlib import pyplot
from collections import namedtuple
from pprint import pprint as pp
from math import floor
#由於有點摸不著頭緒，所以參考了一下同學的程式碼，我下次會更多自己的想法
Stem = namedtuple('Stem', 'data, leafdigits')
 
data0 = Stem((4285,564,1278,205,3920,
              2066,604,209,602,1379,
              2584,14,349,3770,99,

roger35972134

# Tetromino for Idiots
# By Al Sweigart al@inventwithpython.com
# http://inventwithpython.com/pygame
# Released under a "Simplified BSD" license

import random, time, pygame, sys
from pygame.locals import *

偵數 = 25
視窗寬度 = 640

roger35972134

require 'nokogiri'
require 'open-uri'

# Let's try to fetch and parse HTML document

books = Nokogiri::HTML(open('https://udn.com/rank/pv/2/0/1'))

news = []

i = 0 

roger35972134

# @param {String} s
# @return {Integer}
# ----------time limit-------------
def length_of_longest_substring(s)    
    longest_length = 0
    for i in 0..s.length-1
        check = []
        for j in i..s.length-1
            unless check.include? s[j]
                check.push s[j]

roger35972134

# @param {String} s
# @return {Integer}
def length_of_longest_substring(s)    
    max = 0

    for i in 0..s.length-1
        check = Array.new(256, false)
        for j in i..s.length-1
            index = s[j].ord
            if check[index] == false

roger35972134

def length_of_longest_substring(s) 
    max = 0
    start_index = -1
    char_to_index_map = {}
    
    s.chars.each_with_index do |c, i|
        if current_index = char_to_index_map[c] and current_index > start_index # if current_index != nil
            start_index = current_index
        end
        

roger35972134

class Currency < ActiveRecord::Base

  require 'open-uri'
  def self.get_currency
    begin
      books = Nokogiri::HTML(open("https://www.coingecko.com/en"))
      name = []
      abbreviation = []
      rate = []
      exchange = []