题目描述 给你一个链表,每 k 个节点一组进行翻转,请你返回翻转后的链表。 k 是一个正整数,它的值小于或等于 […]
LeetCode 143 – 重排链表
题目描述 给定一个单链表 L 的头节点 head ,单链表 L 表示为: L0 → L1 → … → Ln & […]
LeetCode 54 – 螺旋矩阵
题目描述 给你一个 m 行 n 列的矩阵 matrix ,请按照 顺时针螺旋顺序 ,返回矩阵中的所有元素。 示 […]
BJTUOJ 1927 — 学到十一点才是真学霸
题目 东区一教官方声称十一点熄灯。但是实际上,因为教室里的灯是声控的,所以常常不到十一点许多没有人的教室已经熄 […]
PAT (Advanced Level) Practice 1009 Product of Polynomials
This time, you are supposed to find A×B where A and B a […]
PAT (Advanced Level) Practice 1008 Elevator
The highest building in our city has only one elevator. […]
PAT (Advanced Level) Practice 1007 Maximum Subsequence Sum
Given a sequence of K integers { N1, N2, …, NK}. […]
PAT (Advanced Level) Practice 1002 A+B for Polynomials
This time, you are supposed to find A+B where A and B a […]
POJ 3617 — Best Cow Line
Description FJ is about to take his N (1 ≤ N ≤ 2,000) c […]
Vijos 1041 — 神风堂人数
背景 《风云》里有详细记载,自己去看吧^_^… 描述 天下会评选一级弟子,(做出10题以上的有机会 […]