hihocoder 1014

Trie树模板题 时隔几个月终于又get了Trie树好理解又简洁的模板 ``` /**/ #include #include #include #include #include #include #include #include #include #include #include #include

typedef long long LL;
typedef unsigned long long ULL;
using namespace std;

bool Sqrt(LL n) { return (LL)sqrt(n) * sqrt(n) == n; }
const double PI = acos(-1.0), ESP = 1e-10;
const LL INF = 99999999999999;
const int inf = 999999999, N = 4e5 + 24;
int n, m, h, root, len, cnt[N], trie[N][28];
char s[12];

void insert()
{
root = 0;
len = strlen(s);
for(int i = 0; i < len; i++) {
int id = s[i] - 'a';
if(!trie[root][id]) trie[root][id] = ++h;
cnt[trie[root][id]]++; //Don't forget to change the counter.
root = trie[root][id];
}
}

void search()
{
root = 0;
len = strlen(s);
for(int i = 0; i < len; i++) {
int id = s[i] - 'a';
if(!trie[root][id]) { puts("0"); return ;}
root = trie[root][id];
}
printf("%d ", cnt[root]);
}

int main()
{
//freopen("in.txt", "r", stdin);
//freopen("out.txt", "w", stdout);
scanf("%d", &n);
while(n--) {
scanf("%s", s);
insert();
}
scanf("%d", &m);
while(m--) {
scanf("%s", s);
search();
}

return 0;

}
/*
input:
output:
modeling:
methods:
complexity:
summary:
*/

原文地址:https://www.cnblogs.com/000what/p/11713672.html