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Remove unused functions.
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@@ -137,18 +137,6 @@ void insert(avlTree *tree, int val) {
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tree->root = insertHelper(tree->root, val);
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}
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/* 获取中序遍历中的下一个节点(仅适用于 root 有左子节点的情况) */
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TreeNode *getInOrderNext(TreeNode *node) {
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if (node == NULL) {
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return node;
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}
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// 循环访问左子节点,直到叶节点时为最小节点,跳出
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while (node->left != NULL) {
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node = node->left;
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}
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return node;
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}
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/* 递归删除节点(辅助方法) */
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TreeNode *removeHelper(TreeNode *node, int val) {
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TreeNode *child, *grandChild;
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