这个题目实际上就是[LeetCode] 694. Number of Distinct Islands的变形, 我们实际上还是用那个题目的updated的做法, 用DFS去记录它的相对local 位置, 然后针对翻转和对称能够改变的加上original 位置, 总共有8 种情况, 如果original的每个坐标为(x,y), 那么其他的情况分别为(-x, y), (x,-y), (-x, -y)...
题目:https://leetcode.com/contest/leetcode-weekly-contest-53/problems/number-of-distinct-islands/ 题意:给你一个01图,让你找出有多少不同的联通块(相同意为可以通过平移得到) 思路:BFS保存每次走的方向 代码: #include<bits/stdc++.h> using namespace std; #define MP make_pair int dx[] = ...
Number of Islands 用了第一种方式,Number of Distinct Islands用了第二种方式 注意:如果采用更改原数组的方式,一定要注意加引用!!! Number of Islands变种,假设给的矩阵四周都是陆地,和陆地相连不算island。 方法:与Number of Islands的search函数是一样的,只是需要进行预处理 ,即先把与四周的1相连的全变成0,...
Given a non-empty 2D arraygrid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water. Count the number of distinct islands. An island is considered to be...
[LeetCode] 694. Number of Distinct Islands Problem Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water....
Number of Distinct Islands 传送门:694. Number of Distinct Islands Problem: Given a non-empty 2D array grid of 0’s and 1’s, an island is a group of 1’s (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded ...
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0111-minimum-depth-of-binary-tree.cpp 0115-distinct-subsequences.cpp 0116-populating-next-right-pointers-in-each-node.cpp 0117-populating-next-right-pointers-in-each-node-ii.cpp 0118-pascals-triangle.cpp 0120-triangle.cpp 0121-best-time-to-buy-and-sell-stock.cpp 0122-best-time-to-buy-and-se...
传送门:750. Number Of Corner Rectangles Problem: Given a grid where each entry is only 0 or 1, find the number of corner rectangles. A corner rectangle is 4 distinct 1s on the grid that form an axis-aligned rectangle. Note that only the corners need to have the value 1. Also, all ...
[LeetCode] 694. Number of Distinct Islands You are given anm x nbinary matrixgrid. An island is a group of1's (representing land) connected 4-directionally (horizontal or vertical.) You may assume all four edges of the grid are surrounded by water....