题解 | #二叉搜索树#
二叉搜索树
https://www.nowcoder.com/practice/3d6dd9a58d5246f29f71683346bb8f1b
#include <iostream>
using namespace std;
struct Node{
char val;
Node *l, *r;
Node(int _val) : val(_val), l(NULL), r(NULL){}
};
void insert(Node* &root, int x){
if(!root) root = new Node(x);
else if(x > root->val) insert(root->r, x);
else insert(root->l, x);
}
bool check(Node* a, Node* b){
if(a == NULL && b == NULL) return true;
else if(a == NULL || b == NULL) return false;
else {
if(a->val != b->val) return false;
return check(a->l, b->l) && check(a->r, b->r);
}
}
int main() {
int n;
string s, t;
while(cin>>n){
if(n == 0) break;
cin>>s;
Node *a = NULL;
for(int i = 0; i < s.size(); i ++) insert(a, s[i]);
while(n--){
cin>>t;
Node *b = NULL;
for(int i = 0; i < t.size(); i ++) insert(b, t[i]);
if(check(a, b)) puts("YES");
else puts("NO");
}
}
return 0;
}
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