摘要：
在python2.7中这样调用代码open('file/name.txt','r',encoding= 'utf-8').read()会出现TypeError: 'encoding' is an invalid keyword argument for this fu... 阅读全文
摘要：
Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that:On... 阅读全文
摘要：
Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that:On... 阅读全文
摘要：
Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictio... 阅读全文
摘要：
Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictio... 阅读全文
摘要：
Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid dictionary word.Re... 阅读全文
摘要：
Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid dictionary word.Re... 阅读全文
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Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example, "A man, a pl... 阅读全文
摘要：
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example, "A man, a pl... 阅读全文
摘要：
Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below.For exampl... 阅读全文