摘要： Given an array and a value, remove all instances of that value in place and return the new length. The order of elements can be changed. It doesn't ma 阅读全文

摘要： Given a linked list, swap every two adjacent nodes and return its head. Example: Note: Your algorithm should use only constant extra space. You may no 阅读全文

摘要： 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 ... 阅读全文