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我的第555题,纪念一下!#include<iostream> #include<algorithm> #include<string> #include<vector> using namespace std; struct node { bool flag; int size; node *next[26]; node() { flag=0; for(int i=0;i<26;i++) next[i]=NULL; }; }root; vector<string>pp[30001]; string aa,buff; int N; int ID; int my[30001]; struct AA { int sz; int id; }; AA num[30001]; int minn(int a,int b) { return a<b?a:b; } bool cmp(AA a,AA b) { if(a.sz>b.sz) return 1; else if(a.sz<b.sz) return 0; else { int i,j; i=0;j=0; sort(pp[a.id].begin(),pp[a.id].begin()); sort(pp[b.id].begin(),pp[b.id].begin()); while(i<pp[a.id].size()&&j<pp[b.id].size()) { if(pp[a.id][i]<pp[b.id][i]) return 1; else if(pp[a.id][i]>pp[b.id][i]) return 0; i++;j++; } } return 0; } void dell(string buff,string aa) { int i,len; node *cur=&root; len=buff.size(); for(i=0;i<len;i++) { if(cur->next[buff[i]-'a']==NULL) cur->next[buff[i]-'a']=new node(); cur=cur->next[buff[i]-'a']; } if(!cur->flag) { cur->flag=1; cur->size=++ID; pp[ID].push_back(aa); num[N].sz++; num[N].id=ID; my[cur->size]=N; N++; } else { pp[cur->size].push_back(aa); num[my[cur->size]].sz++; num[my[cur->size]].id=cur->size; } } int main() { N=0; ID=0; int i,j; for(i=0;i<30001;i++) pp[i].clear(); memset(num,0,sizeof(num)); memset(my,-1,sizeof(my)); while(cin>>buff) { // if(buff=="-1") // break; aa=buff; sort(buff.begin(),buff.end()); dell(buff,aa); } sort(num,num+N,cmp); for(i=0;i<minn(N,5);i++) { printf("Group of size %d:",num[i].sz); sort(pp[num[i].id].begin(),pp[num[i].id].end()); cout<<' '<<pp[num[i].id][0]; for(j=1;j<pp[num[i].id].size();j++) { if(pp[num[i].id][j]!=pp[num[i].id][j-1]) cout<<' '<<pp[num[i].id][j]; } printf(" .\n"); } return 0; } /* abc acb bca cab cba cd dc ab ab ba */ Followed by:
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