添加Go语言题解

animation-simulation/二叉树/二叉树中序遍历（迭代）.md

@@ -34,7 +34,7 @@ class Solution {
         TreeNode cur = new TreeNode(-1);
         cur = root;
         Stack<TreeNode> stack = new Stack<>();
-        while (!stack.isEmpty() || cur != null) {
+        while (!stack.isEmpty() || cur != null) {   
                //找到当前应该遍历的那个节点
                while (cur != null) {
                  stack.push(cur);
@@ -47,7 +47,7 @@ class Solution {
                cur = temp.right;
         }
         return arr;
-    }
+    } 
 }
 ```
 
@@ -78,4 +78,30 @@ class Solution {
 }
 ```
 
-###
+Go Code:
+
+```go
+func inorderTraversal(root *TreeNode) []int {
+    res := []int{}
+    if root == nil {
+        return res
+    }
+    stk := []*TreeNode{}
+    cur := root
+    for len(stk) != 0 || cur != nil {
+        // 找到当前应该遍历的那个节点，并且把左子节点都入栈
+        for cur != nil {
+            stk = append(stk, cur)
+            cur = cur.Left
+        }
+        // 没有左子节点，则开始执行出栈操作
+        temp := stk[len(stk) - 1]
+        stk = stk[: len(stk) - 1]
+        res = append(res, temp.Val)
+        cur = temp.Right
+    }
+    return res
+}
+```
+
+###