Python实现破解猜数游戏算法示例

#!/usr/bin/env python# -*- coding: utf-8 -*-__author__ = 'huhu, <huyoo353@126.com>'def find_middle(start, end):  #print start, end  return round((start+end)/2.0)if __name__ == '__main__':  start, end = '',''  text = raw_input(u"> 输入猜数的范围（如：421-499 或者421 499 或者421,499）:").decode('gb18030')  spliters = '-, '  for c in spliters:    if text.find(c) != -1:      num_list = text.split(c)      if ''.join(num_list).isdigit():        start, end = num_list[0],num_list[1]        break  if start == '' or end == '':    print u'范围不正确'  else:    start = int(start)    end  = int(end)    count = 1    last_guess = find_middle(start,end)    while 1:      result = raw_input(u"放弃猜测直接回车, 等于输入=, 小了输入1, 大了请输入2/n>>> #猜数[%d] ,对吗？> " % last_guess ).decode('gb18030')      #print type(text)      if result in ['q','e','exit','quit','bye',u'退出']:        print 'Bye!'        break      else:        result=result.strip()        if result == '1':          start = last_guess          last_guess = find_middle(last_guess,end)        elif result == '2':          end = last_guess          last_guess = find_middle(start,last_guess)        elif result == '=':          print u'恭喜猜中, 共猜了%d次' % count          print u'#猜数[%d]' % last_guess          break        else: #          continue        count += 1