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背景 在搭建Ubuntu16.04的本地apt源时,需要运行“gpg gen key”命令,但是在执行该命令时,出现了:“Not enough random bytes available. Please do some other work to give the OS a chance to c 阅读全文
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原题链接 "https://leetcode.com/problems/number complement/" 原题 Given a positive integer, output its complement number. The complement strategy is to flip 阅读全文
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原题 Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter 阅读全文