Reddit Daily Programmer Challenge 229 [Easy]

Dottie_Number.py

#https://www.reddit.com/r/dailyprogrammer/comments/3i99w8/20150824_challenge_229_easy_the_dottie_number/

import math
import random

# 4 functions that are all pretty close in nature


def f_cos(x):
    while x != math.cos(x):
        x = math.cos(x)
    print(x)


def f_tan(x):
    while x != (x - math.tan(x)):
        x = (x - math.tan(x))
    print(x)


def f_1x(x):
    while x != (1 + 1 / x):
        x = (1 + 1 / x)
    print(x)


def log_map(x):
    while float(x) != (4 * x * (1 - x)):
        x = (4 * x * (1 - x))
    print(x)


# lets try making 1 function that can work all of this logic


def dottie(x, f):
    while x != f(x):
        x = f(x)
    return x


print(dottie(2, lambda x: math.cos(x)))
print(dottie(2, lambda x: x - math.tan(x)))
print(dottie(2, lambda x: 1 + 1 / x))
#print(dottie(random.random(), lambda x: (4 * x * (1 - x))))

f_cos(7)
f_tan(2)
f_1x(7)
# log_map(random.random())