摘要:
Given a sorted linked list, delete all duplicates such that each element appear only once. Example 1: Example 2: 很简单的链表问题,可以写成递归和迭代两种形式。具体思路: 第一步,寻找第一 阅读全文
摘要:
Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to a positive integer target. 阅读全文