James Pan

原题网址：https://leetcode.com/problems/single-number-iii/ Given an array of numbers nums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the tw

原题网址：https://leetcode.com/problems/reverse-nodes-in-k-group/ Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a m

原题网址：https://leetcode.com/problems/matchsticks-to-square/ Remember the story of Little Match Girl? By now, you know exactly what matchsticks the little match girl has, please find out a way you c