Arrays & Hashing

1. Contains Duplicate:
   count method

   count(values.begin(), values.end(), target)

   find method

   (std::find(v.begin(), v.end(),value) != v.end())

1,2,3,4
1,1,2,6
1,12,4,1
24,12,8,6

24,12,8,6
1,2,3,4
1,1,2,6
1,1,8,6