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https://leetcode.com/problems/merge-intervals/Given a collection of intervals, merge all overlapping intervals.For example,Given[1,3],[2,6],[8,10],[15... 阅读全文
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https://leetcode.com/problems/first-missing-positive/Given an unsorted integer array, find the first missing positive integer.For example,Given[1,2,0]... 阅读全文
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https://leetcode.com/problems/copy-list-with-random-pointer/A linked list is given such that each node contains an additional random pointer which cou... 阅读全文
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http://youyang-java.iteye.com/blog/1731205对于IndexReader而言，反复使用IndexReader.open打开会有很大的开销，所以一般在整个程序的生命周期中只会打开一个IndexReader,通过这个IndexReader来创建不同的IndexSea... 阅读全文
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https://leetcode.com/problems/regular-expression-matching/Implement regular expression matching with support for'.'and'*'.'.' Matches any single chara... 阅读全文