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Python includes exercises 21

Python 100 Li Python 100 Li

Title: Monkey eating peach issues: the monkey off his first day of a number of peach, half eaten immediately, not addiction, but also eat a morning in turn eaten by the remaining peach half, then eat a . After the morning ate the day before the rest of the half a zero. Day 10 in the morning when you want to eat, see only one peach. Seeking first day of the total number picked.

Program analysis: take the method of reverse thinking, inferred from the forward.

Source Code:

#!/usr/bin/python
# -*- coding: UTF-8 -*-

x2 = 1
for day in range(9,0,-1):
    x1 = (x2 + 1) * 2
    x2 = x1
print x1

The above example output is:

1534

Python 100 Li Python 100 Li