- Iterative 稍微难想点：先把最左边的add， pop() stack， 加上右边（如果存在）； 下一个轮回，如果又左孩子，又是一顿加。 What if the BST is modified (insert/delete operations) often and you need to find the kth ...
1.Create the class and declare the main method so that the JVM will identify the main program to run. 2.Declare an array and accept the input from user. 3.To accept the inputs from user import Scanner ...
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