class Solution { public: bool containsDuplicate(vector<int>& nums) { unordered_set<int>st(nums.begin(), nums.end()); cout<<nums.size()<<" "<<st.size()<<endl; return (nums.size() == st.size()) ? false : true; } };
class Solution { public: bool containsDuplicate(vector<int>& nums) { unordered_set<int>st(nums.begin(), nums.end()); cout<<nums.size()<<" "<<st.size()<<endl; return (nums.size() == st.size()) ? false : true; } };