[LeetCode] Longest Line of Consecutive One in Matrix 矩阵中最长的连续1

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]]
Output: 3

Hint: The number of elements in the given matrix will not exceed 10,000.

s

时间: 2024-11-10 01:18:42

[LeetCode] Longest Line of Consecutive One in Matrix 矩阵中最长的连续1的相关文章

562. Longest Line of Consecutive One in Matrix

This is an easy question.  No matter what kind of method you chose, the time complexity is at least O(m*n), becasue you have to traverse each element at least once. Here, we have a straight forward method without any maps... class Solution { public:

329 Longest Increasing Path in a Matrix 矩阵中的最长递增路径

Given an integer matrix, find the length of the longest increasing path.From each cell, you can either move to four directions: left, right, up or down. You may NOT move diagonally or move outside of the boundary (i.e. wrap-around is not allowed).Exa

[Leetcode] Longest consecutive sequence 最长连续序列

Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given[100, 4, 200, 1, 3, 2],The longest consecutive elements sequence is[1, 2, 3, 4]. Return its length:4. Your algorithm should run in O(n

Leetcode:Longest Palindromic Substring之详细分析

原题链接:https://leetcode.com/problems/longest-palindromic-substring/ 题目:Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 翻译:求给定

[LeetCode] Longest Consecutive Sequence(DP)

Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given [100, 4, 200, 1, 3, 2], The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4. Your algorithm should run in

LeetCode——Longest Consecutive Sequence

Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example, Given [100, 4, 200, 1, 3, 2], The longest consecutive elements sequence is [1, 2, 3, 4]. Return its length: 4. Your algorithm should run i

[leetcode]Longest Consecutive Sequence @ Python

原题地址:https://oj.leetcode.com/problems/longest-consecutive-sequence/ 题意: Given an unsorted array of integers, find the length of the longest consecutive elements sequence. For example,Given [100, 4, 200, 1, 3, 2],The longest consecutive elements seque

Leetcode之深度优先搜索(DFS)专题-DFS+记忆化 329. 矩阵中的最长递增路径(Longest Increasing Path in a Matrix)

Leetcode之深度优先搜索(DFS)专题-329. 矩阵中的最长递增路径(Longest Increasing Path in a Matrix) 深度优先搜索的解题详细介绍,点击 给定一个整数矩阵,找出最长递增路径的长度. 对于每个单元格,你可以往上,下,左,右四个方向移动. 你不能在对角线方向上移动或移动到边界外(即不允许环绕). 示例 1: 输入: nums = [ [9,9,4], [6,6,8], [2,1,1] ] 输出: 4 解释: 最长递增路径为 [1, 2, 6, 9].

[Leetcode] Longest Consecutive Sequence 略详细 (Java)

题目参见这里 https://leetcode.com/problems/longest-consecutive-sequence/ 这个题目我感觉很难,看了半天别人写的答案,才明白个所以然.下面的代码是我自己的改编,写的好像很复杂的样子,主要也是为了方便自己理解,耐着性子看完,应该就理解了. [个人分析]: 题目难度主要是要求O(N)完成.本来最自然的想法是先排序然后再去扫一遍得到结果,可是这样,明显就是O(NlgN).怎么样从NlgN 提高到O(N)呢?  ==> 空间换时间,空间从O(1)