0463.岛屿的周长增加go解法

PeixiZ · Sep 3, 2022 · a605d75 · a605d75
1 parent 697b8ac
commit a605d75
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diff --git a/problems/0463.岛屿的周长.md b/problems/0463.岛屿的周长.md
@@ -179,6 +179,25 @@ class Solution:
 ```
 
 Go：
+```go
+func islandPerimeter(grid [][]int) int {
+    m, n := len(grid), len(grid[0])
+    res := 0
+    for i := 0; i < m; i++ {
+        for j := 0; j < n; j++ {
+            if grid[i][j] == 1 {
+                res += 4
+                // 上下左右四个方向
+                if i > 0 && grid[i-1][j] == 1 {res--} // 上边有岛屿
+                if i < m-1 && grid[i+1][j] == 1 {res--} // 下边有岛屿
+                if j > 0 && grid[i][j-1] == 1 {res--} // 左边有岛屿
+                if j < n-1 && grid[i][j+1] == 1 {res--} // 右边有岛屿
+            }
+        }
+    }
+    return res
+}
+```
 
 JavaScript：
 ```javascript