小谈汉字转换成拼音辅助函数和辅助类

void StringManipulation::TrimString(string &str,const string val)
{
	str.erase(0,str.find_first_not_of(val));//去掉字符串前面的空白符
	int pos=str.find_last_not_of(val)+val.size();
	if (pos<str.size())
	{
		str.erase(pos);
	}
	//去掉字符串后面的空白符
}

#pragma once
#include "common.h"
class GraphRepresentation
{
public:
	GraphRepresentation(void);
	~GraphRepresentation(void);
	map<int,string>Vertex;
	map<pair<int,int>,string>GraphR;
	void GetPaths(vector<vector<int>>&paths,int beginindex,int endindex);
};

#include "StdAfx.h"
#include "GraphRepresentation.h"

GraphRepresentation::GraphRepresentation(void)
{
}

GraphRepresentation::~GraphRepresentation(void)
{
}
void GraphRepresentation:: GetPaths(vector<vector<int>>&paths,int beginindex,int endindex)
{
	stack<int>mystack;
	vector<int> singlepath;
	int *vertexsStatus=new int[Vertex.size()];//0，未在栈内，1已经在栈内。
	map<pair<int,int>,int>arcstatus;
	for (int i=0;i<Vertex.size();i++)
	{
		vertexsStatus[i]=0;
	}		
	for (map<pair<int,int>,string>::iterator it=GraphR.begin();it!=GraphR.end();it++)
	{
		arcstatus[it->first]=0;
	}


	mystack.push(beginindex);
	vertexsStatus[beginindex]=1;
	int justpopup=-1;//保存刚刚出栈的元素
	while(!mystack.empty())
	{
		int elem=mystack.top();
		if (elem==endindex)//出栈的第一个条件找到了目的节点
		{  //以下代码完成栈的遍历
			while(!mystack.empty())
			{
				int tmp=mystack.top();
				mystack.pop();
				singlepath.push_back(tmp);
			}
			for (vector<int>::reverse_iterator rit=singlepath.rbegin();rit!=singlepath.rend();rit++)
			{
				mystack.push(*rit);

			}
			paths.push_back(singlepath);
			singlepath.clear();

			vertexsStatus[elem]=0;
			for (int k=0;k<Vertex.size();k++)
			{
				if (vertexsStatus[k]==0)
				{
					if (arcstatus.count(make_pair(elem,k)))
					{
						arcstatus[make_pair(elem,k)]=0;
					}

				}
			}


			mystack.pop();

		}
		else
		{   int i=0;
		for (;i<Vertex.size();i++)
		{
			if (GraphR.count(make_pair(elem,i))&&vertexsStatus[i]==0&&arcstatus[make_pair(elem,i)]==0)
			{
				mystack.push(i);
				vertexsStatus[i]=1;
				arcstatus[make_pair(elem,i)]=1;


				//graphR.erase(make_pair(elem,i));

				break;
			}
		}
		if (i==Vertex.size())//出栈的第二个条件，没有可以往栈内添加的后续节点了。
		{
			int elemtmp=mystack.top();
			vertexsStatus[elemtmp]=0;
			for (int k=0;k<Vertex.size();k++)
			{
				if (vertexsStatus[k]==0)
				{
					if (arcstatus.count(make_pair(elemtmp,k)))
					{
						arcstatus[make_pair(elemtmp,k)]=0;
					}
				}
			}


			mystack.pop();


		}

		}




	}


	delete vertexsStatus;

}