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                            # 小島問題

# 小島

LeetCode 上有很多小島題，雖然官方沒有這個標簽， 但是在我這里都差不多。不管是思路還是套路都比較類似，大家可以結合起來練習。

- [200. 島嶼數量](https://github.com/azl397985856/leetcode/blob/master/problems/200.number-of-islands.md)
- [695. 島嶼的最大面積](https://leetcode-cn.com/problems/max-area-of-island/solution/695-dao-yu-de-zui-da-mian-ji-dfspython3-by-fe-luci/)
- [1162. 地圖分析](https://leetcode-cn.com/problems/as-far-from-land-as-possible/solution/python-tu-jie-chao-jian-dan-de-bfs1162-di-tu-fen-x/)

上面三道題都可以使用常規的 DFS 來做。 并且遞歸的方向都是上下左右四個方向。更有意思的是，都可以采用原地修改的方式，來減少開辟 visited 的空間。
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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