摘要：
Design and implement a data structure for a compressed string iterator. It should support the following operations: next and hasNext. The given compre 阅读全文
摘要：
Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window. For example, MovingAverage m = new M 阅读全文
摘要：
Given a nested list of integers, return the sum of all integers in the list weighted by their depth. Each element is either an integer, or a list -- w 阅读全文