POJ-1318（list.sort()输出不为字典序，map才是按字典序排列）

#include<iostream>

#include<string>

#include<list>

#include<map>

#include<utility>

#include<algorithm>

using namespace std;

map<string,int> outputMap;

void ergodic(string prefix, string str){

	if(str==""){

		outputMap.insert(pair<string,int>(prefix,0));

	}else{

		for(int i=0;i<str.length();i++){

			ergodic(prefix+str[i],str.substr(0,i)+str.substr(i+1,str.length()));

		}

	}

}

int main(int argc, char *argv[]){

	string str;

	list<string> inputList;

	while(cin>>str,str!="XXXXXX"){

		inputList.push_back(str);

	}

	while(cin>>str,str!="XXXXXX"){

		bool isUnscramble=false;

		outputMap.clear();

		ergodic("",str);

		for(map<string,int>::iterator iter=outputMap.begin();

				iter!=outputMap.end();

				++iter){

			if(find(inputList.begin(),inputList.end(),iter->first)!=inputList.end()){

				cout<<iter->first<<endl;

				isUnscramble=true;

			}

		}

		if(!isUnscramble){

			cout<<"NOT A VALID WORD"<<endl;

		}

		cout<<"******"<<endl;

	}

	return 0;

}