猴子吃桃子问题 有一群猴子摘了一堆桃子，他们每天都吃当前桃子的一半且再多吃一个，到了第10天就只余下一个桃子。用多种方法实现求出原来这群猴子共摘了多少个桃子。(Monkey eat peaches A group of monkeys picked up a pile of peaches. They ate half of the current peaches and ate one more every day. In the tenth day, the rest of the