Following are my notes of some advanced C/C++ features, which were collected from the Internet. Sharing or reposting this note is welcomed. However, there is no guarantee for the correctness of the content.
This is the third article on binary tree operations. For other topics on binary tree, please refer to:
This is the second article on binary tree operations. For other topics on binary tree, please refer to
The string permutation problem aims to find all the permutations of a string(re-arrangement of characters in this string). A string of length n has n! permutations.