归档 2017

题目描述：

LeetCode 562. Longest Line of Consecutive One in Matrix

Given a 01 matrix M, find the longest line of consecutive one in the matrix. The line could be horizontal, vertical, diagonal or anti-diagonal.

Example:

Input:
[[0,1,1,0],
 [0,1,1,0],
 [0,0,0,1]] ...

题目描述

LeetCode 561. Array Partition I

Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a₁, b₁), (a₂, b₂), ..., (a_{n ...}

题目描述：

LeetCode 563. Binary Tree Tilt

Given a binary tree, return the tilt of the whole tree.

The tilt of a tree node is defined as the absolute difference between the sum of all left subtree node values and ...

LeetCode Weekly Contest 28是LeetCode举办的第三十三场正式周赛，共4道题目，比赛时长1.5小时。

比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-28/

题解列表：

LeetCode 551. Student Attendance Record I

LeetCode 553. Optimal Division

LeetCode 555. Split Assembled Strings

LeetCode 552. Student Attendance Record II

题目描述：

LeetCode 552. Student Attendance Record II

Given a positive integer n, return the number of all possible attendance records with length n, which will be regarded as rewardable. The answer may be very large, return it after mod ...