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1.原题： https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer/ Given an integer number n, return the difference between the 阅读全文
摘要：
1.原题： https://leetcode.com/problems/jewels-and-stones/ You're given strings J representing the types of stones that are jewels, and S representing the 阅读全文
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1.原题： https://leetcode.com/problems/defanging-an-ip-address/ 这道题本身很简单， Given a valid (IPv4) IP address, return a defanged version of that IP address. 阅读全文
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Convert Binary Number in a Linked List to Integer这道题在leetcode上面算作是“easy”，然而小生我还是不会做，于是根据大佬的回答来整理一下思路以便日后复习。 https://leetcode.com/problems/convert-bina 阅读全文