输入一个正整数数组,把数组里所有数字拼接起来排成一个数,打印能拼接出的所有数字中最小的一个。例如输入数组{3,32,321},则打印出这三个数字能排成的最小数字为321323。

// ConsoleApplication2.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <iostream>
#include <vector>
#include <string>
#include<sstream>
#include <deque>
using namespace std;
class Solution {
public:
	string PrintMinNumber(vector<int> numbers) {
		string str;
		for (int i = 0; i < numbers.size(); ++i)
		{
		
			for (int j = i + 1; j < numbers.size(); ++j)
			{
				int temp = CompareNums(numbers[i],numbers[j]);
				if (temp == numbers[i])continue;//如果num的值就是结果值,返回继续循环
				numbers[j] = numbers[i];
				numbers[i] = temp;
			}
		}
	
		
		
	
		for (int i = 0; i < numbers.size(); ++i)
		{
			stringstream stream;  //这块用到类型转换!!!!!!!!!!!!!
			stream << numbers[i];//注意复习C++中类型转换!!!!!!!!!!!
			str += stream.str();
			stream.clear();
			
		}
		cout << "str:" << str << endl;
		return str;
	}
	int CompareNums(int num1,int num2)//选出两个数中位数较高的数字,比较小的那个数
	{
		deque <int> deq1;
		deque <int> deq2;
		deque <int> deq11;//辅助队列, 当num1在前面时
		deque <int> deq22;//辅助队列,当num2在前面时
		int copyNum1 = num1;
		int copyNum2 = num2;
		int num3=num1;//辅助数字,当num3等于0的时候返回哪个数字都可以,最好返回小的数字
		while (copyNum1!=0)
		{
			deq1.push_front(copyNum1 % 10);
			deq11.push_front(copyNum1 % 10);
		//	cout << "copyNum1%10:" << copyNum1 % 10 << endl;
			copyNum1 = copyNum1 / 10;
			
		}

		while (copyNum2 != 0)
		{
			deq2.push_front(copyNum2 % 10);
			deq22.push_front(copyNum2 % 10);
		//	cout << "copyNum2%10:" << copyNum2 % 10 << endl;
			copyNum2 = copyNum2 / 10;
		}

		
		while (!deq2.empty())
		{
			deq11.push_back(deq2.front());
			deq2.pop_front();
		}
		
		while (!deq1.empty ())
		{
			deq22.push_back(deq1.front());
			deq1.pop_front();
		}
		cout << "deq11:";
		for (auto it = deq11.begin(); it != deq11.end(); ++it)
			cout << *it;
		cout << endl;

		cout << "deq22:";
		for (auto it = deq22.begin(); it != deq22.end(); ++it)
			cout << *it;
		cout << endl;
		while (!deq11.empty()&&!deq22.empty())//两者都不为空,两者长度肯定都是相等的
		{
			if (deq11.front() < deq22.front())
			{
				num3 = num1;
				break;
			}
			else if (deq11.front() > deq22.front())
			{
				num3 = num2;
				break;
			}
			else
			{
				deq11.pop_front();
				deq22.pop_front();
			}
		}

		return num3;
	}
};


int main()
{
	Solution so;
	vector<int> vec = { 3,32,321 };
	string str = so.PrintMinNumber(vec);
	/*cout << "结果是:" << endl;
	int num3 = so.CompareNums(123, 121);
	cout << "num3:" << num3 << endl;*/
return 0;
}
posted @ 2016-11-22 15:02  wdan2016  阅读(2497)  评论(0编辑  收藏  举报