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author | Jack Sangdahl <[email protected]> | 2025-03-10 00:36:13 -0600 |
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committer | Jack Sangdahl <[email protected]> | 2025-03-10 00:36:13 -0600 |
commit | 7c60dee83b436e8e8a667bf9f191beced8de4fc3 (patch) | |
tree | eb7a24ee2067f92245c57bb118e85a1baf15df50 /other/number_islands.cpp | |
parent | 5d7cdc215e4ba1ec4cbb24c084cccb5e5e641468 (diff) | |
download | leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.tar.gz leetcode-7c60dee83b436e8e8a667bf9f191beced8de4fc3.zip |
chore: move cpp and rust code to directory
Diffstat (limited to 'other/number_islands.cpp')
-rw-r--r-- | other/number_islands.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/other/number_islands.cpp b/other/number_islands.cpp new file mode 100644 index 0000000..96b8e0b --- /dev/null +++ b/other/number_islands.cpp @@ -0,0 +1,30 @@ +#include "leetcode.h" + +class Solution { +public: + int numIslands(vector<vector<char>> &grid) { + int islands = 0; + for (int i = 0; i < grid.size(); i++) { + for (int j = 0; j < grid[0].size(); j++) { + if (grid[i][j] == '1') { + dfs(grid, i, j); + ++islands; + } + } + } + return islands; + } + +private: + void dfs(vector<vector<char>> &grid, int i, int j) { + if (i < 0 || i >= grid.size() || j < 0 || j >= grid[0].size()) + return; + if (grid[i][j] == '2' || grid[i][j] == '0') + return; + grid[i][j] = '2'; + dfs(grid, i + 1, j); + dfs(grid, i, j + 1); + dfs(grid, i - 1, j); + dfs(grid, i, j + 1); + } +}; |