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lines changed Original file line number Diff line number Diff line change @@ -284,6 +284,55 @@ Python:
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Go:
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+ ``` go
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+ /* *
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+ * Definition for a binary tree node.
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+ * type TreeNode struct {
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+ * Val int
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+ * Left *TreeNode
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+ * Right *TreeNode
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+ * }
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+ */
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+ func max (a, b int ) int {
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+ if a > b {
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+ return a;
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+ }
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+ return b;
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+ }
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+ // 递归
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+ func maxDepth (root *TreeNode ) int {
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+ if root == nil {
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+ return 0 ;
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+ }
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+ return max (maxDepth (root.Left ), maxDepth (root.Right )) + 1 ;
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+ }
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+
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+ // 遍历
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+ func maxDepth (root *TreeNode ) int {
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+ levl := 0 ;
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+ queue := make ([]*TreeNode, 0 );
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+ if root != nil {
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+ queue = append (queue, root);
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+ }
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+ for l := len (queue); l > 0 ; {
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+ for ;l > 0 ;l-- {
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+ node := queue[0 ];
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+ if node.Left != nil {
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+ queue = append (queue, node.Left );
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+ }
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+ if node.Right != nil {
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+ queue = append (queue, node.Right );
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+ }
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+ queue = queue[1 :];
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+ }
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+ levl++;
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+ l = len (queue);
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+ }
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+ return levl;
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+ }
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+
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+ ```
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+
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JavaScript
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``` javascript
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