摘要：
Given two sorted integer arraysnums1andnums2, mergenums2intonums1as one sorted array.Note:You may assume thatnums1has enough space (size that is great... 阅读全文
摘要：
Design a stack that supports push, pop, top, and retrieving the minimum element in constant time.push(x) -- Push element x onto stack.pop() -- Removes... 阅读全文
摘要：
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana... 阅读全文
摘要：
Given a singly linked list, determine if it is a palindrome.Follow up:Could you do it in O(n) time and O(1) space?Subscribeto see which companies aske... 阅读全文