java - 二维数组的相邻值 (java)

Question

嗨，我试图在二维数组中获取所有相等的邻居或相邻值，我已经搜索了很多，但答案对我来说并不足够 示例:

`|1|0|1|`
`|0|1|1|`
`|0|1|0|`

相邻总数:4

int rowLimit = grid.length;
    int columnLimit = grid.length;

    for (int i = 0; i < grid.length; i++) {
        for (int j = 0; j < grid[i].length; j++) {
            for(int x = Math.max(0, i-1); x <= Math.min(i+1, rowLimit); x++) {
                for(int y = Math.max(0, j-1); y <= Math.min(j+1, columnLimit); y++) {
                    if(x != i || y != j) {
                        adj++;
                    }
                }
            }       
        }
    }



    System.out.println("Total adjacent:" + ady);

Answer 1

这是另一种算法(在我看来比你的更简单):

int[][] array = {{1, 0, 1}, {0, 1, 1}, {0, 1, 0}};
int counter = 0;

int rowLimit = array.length;
int colLimit = array[0].length;

for (int r = 0; r < rowLimit; r++)
{
  for (int c = 0; c < colLimit; c++)
  {
    if ((c+1 < colLimit) && (array[r][c] == array[r][c+1]))
      counter++;

    if ((r+1 < rowLimit) && (array[r][c] == array[r+1][c]))
      counter++;
  }
}