zoukankan      html  css  js  c++  java
  • 832. Flipping an Image —— weekly contest 84

    Flipping an Image

    Given a binary matrix A, we want to flip the image horizontally, then invert it, and return the resulting image.

    To flip an image horizontally means that each row of the image is reversed.  For example, flipping [1, 1, 0] horizontally results in [0, 1, 1].

    To invert an image means that each 0 is replaced by 1, and each 1 is replaced by 0. For example, inverting [0, 1, 1] results in [1, 0, 0].

    Example 1:

    Input: [[1,1,0],[1,0,1],[0,0,0]]
    Output: [[1,0,0],[0,1,0],[1,1,1]]
    Explanation: First reverse each row: [[0,1,1],[1,0,1],[0,0,0]].
    Then, invert the image: [[1,0,0],[0,1,0],[1,1,1]]
    

    Example 2:

    Input: [[1,1,0,0],[1,0,0,1],[0,1,1,1],[1,0,1,0]]
    Output: [[1,1,0,0],[0,1,1,0],[0,0,0,1],[1,0,1,0]]
    Explanation: First reverse each row: [[0,0,1,1],[1,0,0,1],[1,1,1,0],[0,1,0,1]].
    Then invert the image: [[1,1,0,0],[0,1,1,0],[0,0,0,1],[1,0,1,0]]
    

    Notes:

    • 1 <= A.length = A[0].length <= 20
    • 0 <= A[i][j] <= 1
     1 class Solution {
     2 public:
     3     vector<vector<int>> flipAndInvertImage(vector<vector<int>>& A) {
     4         vector<vector<int>> res;  
     5         for(int i = 0; i < A.size(); i++){
     6             vector<int> t;   //暂存行
     7             for(int j = A[0].size() - 1; j>=0 ; j--){
     8                 
     9                 if(A[i][j]){                 //取反
    10                     t.push_back(0);
    11                 }else{
    12                     t.push_back(1);
    13                 }
    14                 
    15             }
    16             res.push_back(t);
    17         }
    18         return res;
    19     }
    20 };
  • 相关阅读:
    Web Service简介
    初识web service
    HTTP 状态代码的完整列表
    【转】JBPM4 RepositoryService
    【转】SD和SDHC和SDXC卡的区别
    【转】PP常用TCODE
    【转】SAP会计科目表
    【转】JBPM4中 state 和 task 的不同
    【转】学习一下车险
    【转】JBPM4 TaskService
  • 原文地址:https://www.cnblogs.com/jinjin-2018/p/9034023.html
Copyright © 2011-2022 走看看