摘要：
Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?Have you been asked this question in an interview?public class Solution { public int singleNumb... 阅读全文
摘要：
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.Return a deep copy of the list.Have you been asked this question in an interview?YesDiscuss/** * Definition for singly-linked list with a random pointer. * class RandomL 阅读全文