Return all non-negative integers of length N such that the absolute difference between every two consecutive digits is K. Note that every number in the answer must not have leading zeros except for the number 0 itself. For example, 01 has one leading…

题目如下: Return all non-negative integers of length N such that the absolute difference between every two consecutive digits is K. Note that every number in the answer must not have leading zeros except for the number 0 itself. For example, 01 has one l…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 DFS 日期 题目地址:https://leetcode.com/problems/numbers-with-same-consecutive-differences/ 题目描述 Return all non-negative integers of length N such that the absolute difference between…

Return all non-negative integers of length N such that the absolute difference between every two consecutive digits is K. Note that every number in the answer must not have leading zeros except for the number 0 itself. For example, 01 has one leading…

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 matr…

Given an array nums sorted in ascending order, return true if and only if you can split it into 1 or more subsequences such that each subsequence consists of consecutive integers and has length at least 3. Example 1: Input: [1,2,3,3,4,5] Output: True…

Given a binary tree, find the length of the longest consecutive sequence path. The path refers to any sequence of nodes from some starting node to any node in the tree along the parent-child connections. The longest consecutive path need to be from p…

已经正式在实习了,好久都没有刷题了(应该有半年了吧),感觉还是不能把思维锻炼落下,所以决定每周末刷一次LeetCode. 这是第一周(菜的真实,只做了两题,还有半小时不想看了,冷~). 第一题: 965. Univalued Binary Tree A binary tree is univalued if every node in the tree has the same value. Return true if and only if the given tree is univalu…

965. Univalued Binary Tree A binary tree is univalued if every node in the tree has the same value. Return true if and only if the given tree is univalued. Example 1: Input: [1,1,1,1,1,null,1] Output: true Example 2: Input: [2,2,2,5,2] Output: false…

Contest 111 (题号941-944)(2019年1月19日,补充题解,主要是943题) 链接:https://leetcode.com/contest/weekly-contest-111 [941]Valid Mountain Array(第一题 3分)(google tag) 判断一个数组是不是 Mountain 数组. Mountain 数组的定义是 A.length >= 3There exists some i with 0 < i < A.length - 1 su…