...flag1; boolean[][] flag2; public List pacificAtlantic(int[][] matrix) { List ans = new ArrayList(1000); if(matrix.length == 0)return ans; left = new bo...
Problem You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise). Example Given a matrix [ [1,2], [3,4] ] rotate it by 90 degrees (clockwise), return ...
...要求 Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted in ascending from left to right. Integers in...
Spiral Matrix I Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. For example, Given the following matrix: [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8...
Problem You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have to rotate the image in-place, which means you have to modify the input 2D mat...
LeetCode[329] Longest Increasing Path in a Matrix Given an integer matrix, find the length of the longest increasingpath. From each cell, you can either move to four directions: left, right,up or dow...
Problem Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. Example Given a matrix [ [1,2], [0,3] ], return [ [0,2], [0,0] ] Challenge Did you use extra...
Set Matrix Zeroes Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra space? A straight forward solutio...
378. Kth Smallest Element in a Sorted Matrix 题目链接：https://leetcode.com/problems... 求矩阵里面第k小的数，首先比较容易想到的是用heap来做，maxheap或者minheap都可以，用maxheap的话把全部元素放进heap里面，同时如果heap的size大于k就弹出，...
Spiral Matrix I Problem Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. Example Given the following matrix: [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7,...
...的方法 define some functions to calculate some baseline index def Cn(MatrixAdjacency): Matrix_similarity = np.dot(MatrixAdjacency,MatrixAdjacency) return Matrix_similarity 计算Jaccard相似性指标 def Jaccavrd...
Problem Find the kth smallest number in at row and column sorted matrix. Example Given k = 4 and a matrix: [ [1 ,5 ,7], [3 ,7 ,8], [4 ,8 ,9], ] return 5 Challenge O(k log n), n is the maximal n...
Longest Increasing Path in a Matrix 题目链接：https://leetcode.com/problems... dfs + 记忆化搜索，用一个二维dp记录找到的最长路径的长度，如果发现dpi != 0,证明这个点被找过，不用重复。Number of Islands和这题一个思路。 public class Solution { ...
...由于用到了旋转和伸缩两种变换，所以需要使用transform: matrix(a,b,c,d,e,f) 这个变换矩阵。 这里的6个变量组成了一个3介的变换矩阵 $$ left[ egin{matrix} a & c & e b & d & f 0 & 0 & 1 end{matrix} ight] $$ 任意点p(x,y)的平移， 旋转， ...
...to calculate some baseline index 计算Jaccard相似性指标 def Jaccavrd(MatrixAdjacency_Train): Matrix_similarity = np.dot(MatrixAdjacency_Train,MatrixAdjacency_Train) deg_row = sum(MatrixAdjacency_Train) d...
轻量云主机已更新简化版Windows帕鲁镜像的安装教程，现在仅需3步，就可以畅游帕鲁大陆！需要Lin...
UCloud轻量云主机已更新Linux帕鲁镜像的安装教程，现在仅需1步，就可以畅游帕鲁大陆！也欢迎大...
