Refers to offer Series 13: Clockwise Matrix Print

This question is bound to circle around the loop, therefore, consider two questions: 1. How do I end the cycle 2. How to print circle

I'm lazy today, main function is I moved from the answers.

 1 #include<iostream>
 2 #include<vector>
 3 using namespace std;
 4 class Solution {
 5 public:
 6     vector<int> printMatrix(vector<vector<int> > matrix) {
 7         int row = matrix.size();
 8         int col = matrix[0].size();
 9         int left = 0, right = col-1;//列标
10         int top = 0, bot = row-1; // row index 
. 11          Vector < int >   Result;
 12 is          the while (left <= right && Top <= BOT)
 13 is          {
 14              // print top row, the column is variable 
15              for ( int I = left; I <= right; I ++ )
 16              {
 . 17                  result.push_back (Matrix [Top] [I]);
 18 is              }
 . 19              // print the right column, is variable row 
20 is              IF (BOT> Top)
 21 is              {
 22 is                  for ( int I = Top +. 1 ; I <= BOT; I ++ )
 23 is                  {
 24                      result.push_back (Matrix [I] [right]);
 25                  }
 26 is              }
 27              // print the lower row, the column is variable 
28              IF (BOT> Top && right> left)
 29              {
 30                  for ( int I = right- . 1 ; I> = left; i-- )
 31 is                  {
 32                      result.push_back (Matrix [BOT] [I]);
 33 is                      
34 is                  }
 35              }
 36              //Left a print line is variable 
37 [              IF (Top-BOT> . 1   && right> left)
 38 is              {
 39                  for ( int I = bot- . 1 ; I> Top; i-- )
 40                  {
 41 is                      result.push_back (Matrix [I ] [left]);                
 42 is                  }
 43 is              }
 44 is              Top ++ ;
 45              Right - ;
 46 is              bot-- ;
 47              left ++ ;
 48  
49          }
50         return result;
51     }
52 };
53 int main()
54 {
55     int a1[] = { 1,  2,  3,  4 };
56     int a2[] = { 5,  6,  7,  8 };
57     int a3[] = { 9, 10, 11, 12 };
58     int a4[] = { 13, 14, 15, 16 };
59     //    int a1[] = { 1 };
60     //    int a2[] = { 2 };
61     //    int a3[] = { 3 };
62     //    int a4[] = { 4 };
63 
64     vector<int> vec1(a1, a1 + 4);
65     vector<int> vec2(a2, a2 + 4);
66     vector<int> vec3(a3, a3 + 4);
67     vector<int> vec4(a4, a4 + 4);
68 
69 
70     vector< vector<int> > vec;
71     vec.push_back(vec1);
72     vec.push_back(vec2);
73     vec.push_back(vec3);
74     vec.push_back(vec4);
75 
76     Solution solu;
77     vector<int> res = solu.printMatrix(vec);
78     for (int i = 0; i < res.size(); i++)
79     {
80         cout << res[i] << " ";
81     }
82     return 0;
83 }