First and last occurrences of x.cpp

class Solution
{
    public:
    vector<int> find(int arr[], int n , int x )
    {
          vector<int>ans;
          for(int i=0;i<n;i++){
              if(arr[i]==x){
                  ans.push_back(i);
                  break;
              }
          }
         if(ans.size()!=1) ans.push_back(-1);
           for(int i=n-1;i>=0;i--){
              if(arr[i]==x){
                  ans.push_back(i);
                  break;
              }
          }
           if(ans.size()!=2) ans.push_back(-1);  
          return ans;
    }
}