GaryRevell

from math import floor,sqrt

class Spiral():
    """
    This class creates a spiral starting from 1..elements
    """
    #
    # Define up/down & left/right step functions
    #
    def move_right(self,x, y):

GaryRevell

#
# Advent problem from day one - http://adventofcode.com/2017/day/1
#
def captcha(myStr):
    return sum([int(myStr[c]) for c in range(-1,len(myStr)-1) if myStr[c]==myStr[c+1]])

myStrs = {'1122':3,'1111':4,'1234':0,'91212129':9}

if __name__ == '__main__':
    for m in myStrs:

GaryRevell

#
# Toy function that has 1 required arg, then allows a simple open-ended list of args (tuple)
# and finally handles key=val list arguments stored as a dict
#
def varargs(req, *args, **kwargs):
    print("req=",req)
    if args:
        print("args=",args)
    if kwargs:
        print("kwargs=",kwargs)

GaryRevell

#
# Very simple "Hello World" type machine learning intro program that uses a decision tree classifier
#
from sklearn import tree
#
print("Features = [Weight, skin-type] e.g.[140 gms, 'smooth' = 1] , [180 gms, 'bumpy' = 0 ]")
features = [[140,1],[130,1],[150,1],[170,0],[190,0]]
print("Raw data = ",features)
#
print("For each label => apple (0) , orange (1)")

GaryRevell

from itertools import *

def show(iterable):
    first = None
    for i, item in enumerate(iterable, 1):
        if first != item[0]:
            if first is not None:
                print()
            first = item[0]
        print(''.join(item), end=' ')

GaryRevell

'''
 The Number Guess Game

 Guess the random number the computer has chosen.
 After each try, if unsuccessful, the program will help by narrowing the bounds to guess in.
 This helps to teach binary searches, where you chop midway between the ranges each time to
 minimize the number of guesses required
 Type 'q' to quit the program
'''

GaryRevell

'''
Calculate pi using Nilakantha series

http://www.codeproject.com/Articles/813185/Calculating-the-Number-PI-Through-Infinite-Sequenc

    π = 3 + (4/(2*3*4)) - (4/(4*5*6)) + (4/(6*7*8)) - (4/(8*9*10)) ...

Or another series

http://www-history.mcs.st-andrews.ac.uk/Biographies/Nilakantha.html