Programmer Group

110.Balanced Binary Tree-Force Button (LeetCode) Release: October 10, 2021 21:30:53 Problem description and examples Given a binary tree, determine whether it is a highly balanced binary tree. In this topic, a height-balanced binary tree is defined as: The absolute difference between the left and right subtrees of each node of a binary tr ...

tree structure Our previous studies are basically one-to-one problems, and the tree is a nonlinear data structure, which is a finite set with hierarchical relationship composed of n(n ≥ 0) nodes characteristic: When n=0, it is called an empty tree. In any non empty tree: There is and only one root nodeWhen n > 1, the other nodes ca ...

Non recursive postorder traversal of binary tree 1. Using 1 stack O(n) time, O(n) space The initial setting stack is empty, and the current node is the root node Perform the following operations until the stack is empty and the current node is empty: Stack the current node and set the left child as the current node until the current node is ...

1, Zuo gaoshu The heap structure learned earlier is an implicit data structure. The heap represented by a complete binary tree is stored implicitly in an array (i.e. no explicit pointer or other data can be used to reshape this structure). Because there is no storage structure information, this representation method has high space utilizat ...