tree iterator

1.an iterator (iterator) is a data type that examines the elements within a container and iterates through the elements. (1) Each container type defines its own iterator type, such as vector:Vector::iterator ITER; This statement defines a variable

Understand the iterator in C ++ STL step by step "Pointer" is no stranger to all C/C ++ programmers. When we access the malloc function in C language and the new function in C ++, we also know that the two functions return a pointer, which points

1. an iterator (iterator) is a data type that examines the elements within a container and iterates through the elements. (1) Each container type defines its own iterator type, such as vector:Vector::iterator ITER; This statement defines a variable

SPL provides multiple iterator classes that provide iterative access, filtering data, caching results, and controlling paging. , because PHP is always growing, I try to list all of the iteration classes in SPL. Some of the following iterator classes

1. For a sequential container (such as Vector,deque), the sequence container is an array container, and deleting the current iterator invalidates the iterator of all subsequent elements. This is because Vetor,deque uses contiguous allocated memory,

Run: For (iterator it = O. getsons (). iterator (); it. hasnext ();){ R = (knowledgenode) it. Next (); It. Remove (); // if it is changed to O. getsons (). Remove (r);, the concurrentmodificationexception will be thrown. } An exception occurred. It

statement:1, Ben Boven mainly from the "C + + Primer" and "STL Source analysis" These two classic books. At the same time, also referred to the network of many excellent blogs, the authors of these blogs thanked. 2, due to the limited ability of

The java. util package contains a series of important collection classes. This article will start with analyzing the source code, thoroughly studying the internal structure of a collection class, and traversing the source code implementation of the

The first, middle, and subsequent traversal of a binary tree isAlgorithmAnd the basic problems in the data structure, the recursive binary tree traversal algorithm is also a typical application of recursion. Assume that the Binary Tree node is

Definition Provides a way to access an aggregate object without exposing its internal representation. The UML class diagram is as follows: The relationship between classes and objects is: 1. iterator: The iterator defines interfaces