【ccf- csp201412-2】z字形扫描

 //ccf-Z字形扫描
 #include<iostream>
 #include<cmath>
 using namespace std;
 #define N 500
 int main()
 {
     unsigned n, i, j;cin >> n;
     //n = 4;
     //unsigned a[N][N] = { { 1, 5, 3, 9 },{ 3, 7 ,5, 6 },{ 9, 4, 6, 4 },{ 7 ,3, 1, 3 } };
     unsigned a[N][N];
     for (i = ; i < n; i++)
         for (j = ; j < n; j++)
             cin >> a[i][j];

     i = ; j = ;
     int k = , m;
     cout << a[][] << ' ';
     while (k <=  * n - )
     {
         ++k;
         if (k < n)
         {
             if (k % )
             {
                 j++;
                 i = ;
                 while (i < k)
                 {
                     cout << a[i][j] << ' ';
                     j--;
                     i++;
                 }
             }
             else
             {
                 i++;
                 //j = 0;
                 while (j < k)
                 {
                     cout << a[i][j] << ' ';
                     i--;
                     j++;
                 }
             }
             cout << a[i][j] << ' ';
         }
         else
         {
             if (k % )
             {
                 m =  * n - k;
                 //j = n - 1;
                 //i++;
                 j = n;
                 while (--m)
                 {

                     i++;
                     j--;
                     cout << a[i][j] << ' ';
                 }
             }
             else
             {
                 m =  * n - k;
                 i = n;
                 while (--m)
                 {
                     j++;
                     i--;
                     cout << a[i][j] << ' ';
                 }
             }
         }
     }
     return ;
 }

注意i,j输出后的值即可~