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问一道阿里的面试题如何求解
source link: https://www.v2ex.com/t/645168
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程序员 - @dazhangpan - N 年前面试阿里的时候有一道算法题不会做，后来一直念念不忘，在网络搜了一下也没找到答案，至今仍然没想出来...题目是给一个方法 foo()，能以各 50%的概率随机返回 0 或者 1。问题是基
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