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【Q19】 Given a linked list, remove the n-th node from the end of list and return its head. Example: Note: Given n will always be valid. Follow up: Coul 阅读全文
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【Q13】 Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. For example, two is written as II in Roman numeral, just two 阅读全文
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【Q10】 Given an input string (s) and a pattern (p), implement regular expression matching with support for '.' and '*'. The matching should cover the e 阅读全文
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[Q7] 把数倒过来 Given a 32-bit signed integer, reverse digits of an integer. Example 1: Example 2: Example 3: 【Q8】在给定列表中搜索数字,且数字必须在最开头位置 The function first 阅读全文
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[Q4] There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexi 阅读全文
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[Q1] Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would ha 阅读全文