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原文链接: https://leetcode-cn.com/problems/integer-to-roman 英文原文Roman numerals are represented by seven different symbols:

原文链接: https://leetcode-cn.com/problems/roman-to-integer 英文原文Roman numerals are represented by seven different symbols:

原文链接: https://leetcode-cn.com/problems/3sum 英文原文Given an integer array nums, return all the triplets [nums[i], nums[j]

原文链接: https://leetcode-cn.com/problems/longest-common-prefix 英文原文Write a function to find the longest common prefix st

原文链接: https://leetcode-cn.com/problems/letter-combinations-of-a-phone-number 英文原文Given a string containing digits from

原文链接: https://leetcode-cn.com/problems/4sum 英文原文Given an array nums of n integers, return an array of all the unique q

原文链接: https://leetcode-cn.com/problems/remove-nth-node-from-end-of-list 英文原文Given the head of a linked list, remove th

原文链接: https://leetcode-cn.com/problems/valid-parentheses 英文原文Given a string s containing just the characters '(

原文链接: https://leetcode-cn.com/problems/merge-two-sorted-lists 英文原文You are given the heads of two sorted linked lists l

原文链接: https://leetcode-cn.com/problems/generate-parentheses 英文原文Given n pairs of parentheses, write a function to gene