Cant find whats wrong in my code

#1

string uniquePrefix(string s){
node* temp = root;
string ans= “”;
for(int i=0;i<s.length();i++){
char c = s[i];
if(temp->children[c]->num==1){
ans = ans+c;
return ans;
}else{
ans = ans+c;
temp = temp->children[c];
}
}
ans = “-1”;
return ans;
}

#2

@rohanmd07 hey can you please share me the question link .

#3

Q Find the unique prefixes in an array of strings(using trie)

#4

@rohanmd07 hey please share the link of question of hackerblocks so that I can submit it.

#5

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