题目:http://pat.zju.edu.cn/contests/pat-a-practise/1038
题解:
代码:
#include<cstdio>
#include<cstring>
#include<cmath>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<algorithm>
using namespace std;
struct ch
{
char s[15];
}str[10005];
bool cmp(const struct ch &a,const struct ch &b)
{
char tmpa[30],tmpb[30];
strcpy(tmpa,a.s);
strcpy(tmpb,b.s);
strcat(tmpa,b.s);
strcat(tmpb,a.s);
return strcmp(tmpa,tmpb)<0;
}
int main()
{
int n;
scanf("%d",&n);
for(int i=0; i<n; ++i)
scanf("%s",str[i].s);
sort(str,str+n,cmp);
bool flag=false;
for(int i=0; i<n; ++i)
{
for(int j=0; str[i].s[j]!='\0'; ++j)
{
if(!(flag==false&&str[i].s[j]=='0'))
{
flag=true;
printf("%c",str[i].s[j]);
}
}
}
if(flag==false) printf("0");
printf("\n");
return 0;
}
来源: http://blog.youkuaiyun.com/acm_ted/article/details/20172431