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QuestionGiven a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a can... 阅读全文
posted @ 2015-09-17 08:05
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摘要:
QuestionGivennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpo... 阅读全文
posted @ 2015-09-17 03:46
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