摘要：
Given a positive integer n and you can do operations as follow: What is the minimum number of replacements needed for n to become 1? Example 1: Exampl 阅读全文
posted @ 2016-11-03 22:56
Black_Knight
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摘要：
Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc", which the leng 阅读全文
posted @ 2016-11-03 13:51
Black_Knight
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摘要：
Given a non-empty string containing an out-of-order English representation of digits 0-9, output the digits in ascending order. Note: Example 1: Examp 阅读全文
posted @ 2016-11-03 12:14
Black_Knight
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