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"translatedContent": "<p>给定一个 <code>row x col</code> 的二维网格地图 <code>grid</code> ,其中:<code>grid[i][j] = 1</code> 表示陆地, <code>grid[i][j] = 0</code> 表示水域。</p>\n\n<p>网格中的格子 <strong>水平和垂直</strong> 方向相连(对角线方向不相连)。整个网格被水完全包围,但其中恰好有一个岛屿(或者说,一个或多个表示陆地的格子相连组成的岛屿)。</p>\n\n<p>岛屿中没有“湖”(“湖” 指水域在岛屿内部且不和岛屿周围的水相连)。格子是边长为 1 的正方形。网格为长方形,且宽度和高度均不超过 100 。计算这个岛屿的周长。</p>\n\n<p> </p>\n\n<p><strong>示例 1</strong></p>\n\n<p><img src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2018/10/12/island.png\" /></p>\n\n<pre>\n<strong>输入:</strong>grid = [[0,1,0,0],[1,1,1,0],[0,1,0,0],[1,1,0,0]]\n<strong>输出:</strong>16\n<strong>解释:</strong>它的周长是上面图片中的 16 个黄色的边</pre>\n\n<p><strong>示例 2</strong></p>\n\n<pre>\n<strong>输入:</strong>grid = [[1]]\n<strong>输出:</strong>4\n</pre>\n\n<p><strong>示例 3</strong></p>\n\n<pre>\n<strong>输入:</strong>grid = [[1,0]]\n<strong>输出:</strong>4\n</pre>\n\n<p> </p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>row == grid.length</code></li>\n\t<li><code>col == grid[i].length</code></li>\n\t<li><code>1 <= row, col <= 100</code></li>\n\t<li><code>grid[i][j]</code> 为 <code>0</code> 或 <code>1</code></li>\n</ul>\n",
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