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转自 http://www.cnblogs.com/snowInPluto/p/5996269.html 1. 问题描述 首先介绍什么是蓄水池采样问题（Reservoir Sampling）。 ...
1. 问题描述 problem link Given a singly linked list, return a random node's value from the linked lis...
1. 题目描述 problem link Given an array of integers with possible duplicates, randomly output the ind...