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Given an arbitrary ransom note string and another string containing letters from all the magazines, write a function that will return true if the rans 阅读全文
posted @ 2018-03-27 22:36
bonelee
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Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may comple 阅读全文
posted @ 2018-03-27 22:18
bonelee
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Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. Roman Numerals Chart M=1000 D = 500 I 1 XX 阅读全文
posted @ 2018-03-27 21:23
bonelee
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import re pattern = re.compile( r'^(([a-zA-Z]{1})|([a-zA-Z]{1}[a-zA-Z]{1})|' r'([a-zA-Z]{1}[0-9]{1})|([0-9]{1}[a-zA-Z]{1})|' r'([a-zA-Z0-9][-_.a-zA-Z0-9]{0,61}[a-zA-Z0-9]))\.' r'([a... 阅读全文
posted @ 2018-03-27 12:01
bonelee
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