摘要：
Given a string s of lower and upper case English letters. A good string is a string which doesn't have two adjacent characters s[i] and s[i + 1] where 阅读全文
posted @ 2022-11-08 11:27
CNoodle
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摘要：
You are given a positive integer num consisting only of digits 6 and 9. Return the maximum number you can get by changing at most one digit (6 becomes 阅读全文
posted @ 2022-11-08 00:33
CNoodle
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