diff --git a/problems/0463.岛屿的周长.md b/problems/0463.岛屿的周长.md
index 3dc69f20..a881cd7c 100644
--- 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
diff --git a/problems/1356.根据数字二进制下1的数目排序.md b/problems/1356.根据数字二进制下1的数目排序.md
index 5ca73607..e97748cb 100644
--- a/problems/1356.根据数字二进制下1的数目排序.md
+++ b/problems/1356.根据数字二进制下1的数目排序.md
@@ -170,6 +170,39 @@ class Solution:
 ## Go
 
 ```go
+func sortByBits(arr []int) []int {
+    var tmp int
+    for i := 0; i < len(arr); i++ {
+        for j := i+1; j < len(arr); j++ {
+            // 冒泡排序的手法，但是排序的规则从比大小变成了比位运算1的个数
+            if isCmp(arr[i], arr[j]) {
+                tmp = arr[i]
+                arr[i] = arr[j]
+                arr[j] = tmp
+            }
+        } 
+    }
+    return arr
+}
+
+func isCmp(a, b int) bool {
+    bitA := bitCount(a)
+    bitB := bitCount(b)
+    if bitA == bitB {
+        return a > b
+    } else {
+        return bitA > bitB 
+    }
+}
+
+func bitCount(n int) int {
+    count := 0
+    for n != 0 {
+        n &= (n-1) // 清除最低位的1
+        count++
+    }
+    return count
+}
 ```
 
 ## JavaScript