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 complexity should be O(log (m+n)). You may assume nums1 and nums2 cannot be both empty.
（两个有序数组的中位数）
Given a string, find the length of the longest substring without repeating characters.
（字符串中的最大不重复子串）
You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two numbers do not contain any leading zero, except the number 0 itself.
（字符串/链表数值加法）
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 have exactly one solution, and you may not use the same element twice.
（一个数组中某两个元素的和为给定值）
面向任务的对话（Task-oriented Dialog）主要关注在某些特定的领域，用户带有目的的发起的会话。本文将从一个具体的数据集出发，结合基于此数据集设计的不同的系统来具体的分析对于此类任务的the-State-of-Art。
自然语言理解（Natural Language Understanding, NLU）是NLP领域的一个分支，在自然语言理解的过程中，首先就是对意图（Intent）分类，然后接着对槽位（Slot）填充。