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请教这道题如何解决输入length=0的字符串

Posted by xhu_li at 2008-12-14 19:14:33 on Problem 2681
/*****************************
一下是我写的代码,测试了几组数组,是对的,但是总是wa,希望哪位帮我看看!!!!
                                       谢谢!!

我的程序不能输入length=0的字符串,是不是这格问题??????????

*****************************/

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
	long n;
	char str1[46],str2[46];
	cin>>n;
	long p=0;
	while(n--)
	{
		p++;
		int i,j,k=0,t=0,len1=0,len2=0;
		scanf("%s",str1);   //不知道这里输入的时候是否有问题
		scanf("%s",str2);
		len1=strlen(str1);
		len2=strlen(str2);
		if(len1==0||len2==0)
		{
			if(len1>len2)
				cout<<"Case #"<<p<<":  "<<len1<<endl;
			else
				cout<<"Case #"<<p<<":  "<<len2<<endl;
			continue;
		}
		for(i=0;i<len1;i++)
		{
			for(j=0;j<len2;j++)
			{
				if(str1[i]==str2[j])
				{
					str2[j]='0';
					k++;
					break;
				}
			}
			if(k==len2)
				break;
		}
		t=len1+len2-2*k;
		cout<<"Case #"<<p<<":  "<<t<<endl;
	}
	return 0;
}


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