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LeetCode Notes_#92 Reverse Linked List II(C++,Python)LeetCode Contents题目思路和解答思路解答C++Python 题目Reverse a linked list from position m to n. Do it in one-pass.Note: 1 ≤ m ≤ n ≤ length of list.Example:In... 阅读全文
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LeetCode Notes_#17 Letter Combinations of a Phone NumberLeetCode Contents题目思路和解答思路解答 题目Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number co... 阅读全文
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LeetCode Notes_#18 4SumLeetCode Contents题目思路和解答思路解答 题目Given an array nums of n integers and an integer target, are there elements a, b, c, and d in nums such that a + b + c + d = target? Find all un... 阅读全文