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@@ -100,8 +100,7 @@ void maxHblt<T>::display() {
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//重要 -> 合并两个子树,把y合并进入x
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//* &x,指针的引用,表示指针可以修改(传入函数)
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template<class T>
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void maxHblt<T>::meld(binaryTreeNode<std::pair<int, T>>*& x,
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binaryTreeNode<std::pair<int, T>>*& y) {
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void maxHblt<T>::meld(binaryTreeNode<std::pair<int, T>>*& x, binaryTreeNode<std::pair<int, T>>*& y) {
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if (y == nullptr) return;
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if (x == nullptr) {
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x = y;
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