Matrix Cells in Distance Order
2019-08-16 07:52:25来源:博客园 阅读 ()
Matrix Cells in Distance Order
Matrix Cells in Distance Order
We are given a matrix with R rows and C columns has cells with integer coordinates (r, c), where 0 <= r < R and 0 <= c < C.
Additionally, we are given a cell in that matrix with coordinates (r0, c0).
Return the coordinates of all cells in the matrix, sorted by their distance from (r0, c0) from smallest distance to largest distance. Here, the distance between two cells (r1, c1) and (r2, c2) is the Manhattan distance, |r1 - r2| + |c1 - c2|. (You may return the answer in any order that satisfies this condition.)
Example 1:
Input: R = 1, C = 2, r0 = 0, c0 = 0
Output: [[0,0],[0,1]]
Explanation: The distances from (r0, c0) to other cells are: [0,1]
Example 2:
Input: R = 2, C = 2, r0 = 0, c0 = 1
Output: [[0,1],[0,0],[1,1],[1,0]]
Explanation: The distances from (r0, c0) to other cells are: [0,1,1,2]
The answer [[0,1],[1,1],[0,0],[1,0]] would also be accepted as correct.
Example 3:
Input: R = 2, C = 3, r0 = 1, c0 = 2
Output: [[1,2],[0,2],[1,1],[0,1],[1,0],[0,0]]
Explanation: The distances from (r0, c0) to other cells are: [0,1,1,2,2,3]
There are other answers that would also be accepted as correct, such as [[1,2],[1,1],[0,2],[1,0],[0,1],[0,0]].
Note:
1 <= R <= 100
1 <= C <= 100
0 <= r0 < R
0 <= c0 < C
Code
//
// main.cpp
// 最短最长距离
//
// Created by mac on 2019/7/21.
// Copyright ? 2019 mac. All rights reserved.
//
#include <iostream>
#include <algorithm>
#include <unordered_map> //Hash Table
#include <vector>
#include <cmath>
using namespace std;
class Solution {
public:
vector<vector<int>> allCellsDistOrder(int R, int C, int r0, int c0)
{
vector<vector<int>> res;
vector<vector<vector<int>>> box(R+C-1);
for(int i=0;i<R;i++)
for(int j=0;j<C;j++)
{
vector<int> temp={i,j};
int index=abs(i-r0)+abs(j-c0);
box[index].push_back(temp);
}
for(auto i:box)
if(i.size())
for(auto j:i) res.push_back(j);
return res;
}
};
int main(int argc, const char * argv[]) {
int R=2;
int C=2;
int r0=0;
int c0=1;
Solution so;
vector<vector<int>> test = so.allCellsDistOrder(2, 2, 0, 1);
cout<<"[";
for (auto i : test) {
cout<<"[";
for (auto j :i) {
cout<<j<<",";
}
cout<<"],";
}
cout<<"]";
// vector<int> a(3);
// a={1,2,3,4};
// vector<vector<int>> b,e;
// vector<vector<vector<int>>> c;
//
// b.push_back(a);
// b.push_back({2,3,4,5,9});
// b.push_back({1,2,3,89,44});
//
//
// e.push_back({9,3,4,5,9});
// e.push_back({8,2,3,89,44});
//
// c.push_back(b);
// c.push_back(e);
//
// for(auto i:c){
// for (auto j:i) {
// for (auto k : j) {
// cout<<k<<" ";
// }
// cout<<endl;
// }
// cout<<endl<<endl;
// }
//=============================
// for (int k=0; k<b.size(); ++k) {
// for (int i=0; i<a.size(); ++i) {
// cout<<b[k][i]<<" ";
// }
// cout<<endl;
// }
return 0;
}
运行结果
[[0,1,],[0,0,],[1,1,],[1,0,],]Program ended with exit code: 0
参考文献
- https://leetcode.com/problems/matrix-cells-in-distance-order/
原文链接:https://www.cnblogs.com/overlows/p/11226081.html
如有疑问请与原作者联系
标签:
版权申明:本站文章部分自网络,如有侵权,请联系:west999com@outlook.com
特别注意:本站所有转载文章言论不代表本站观点,本站所提供的摄影照片,插画,设计作品,如需使用,请与原作者联系,版权归原作者所有
- 两个数的差 2019-10-16
- POJ3233Matrix Power Series(矩阵快速幂) 2018-09-29
- BZOJ4128: Matrix(BSGS 矩阵乘法) 2018-07-11
- Aspose.Cells导出Excel(2) 2018-06-27
- Aspose.Cells导出Excel(1) 2018-06-18
IDC资讯: 主机资讯 注册资讯 托管资讯 vps资讯 网站建设
网站运营: 建站经验 策划盈利 搜索优化 网站推广 免费资源
网络编程: Asp.Net编程 Asp编程 Php编程 Xml编程 Access Mssql Mysql 其它
服务器技术: Web服务器 Ftp服务器 Mail服务器 Dns服务器 安全防护
软件技巧: 其它软件 Word Excel Powerpoint Ghost Vista QQ空间 QQ FlashGet 迅雷
网页制作: FrontPages Dreamweaver Javascript css photoshop fireworks Flash