[Cs3] vector comparison

[Mikhail Nesterenko]

CS3 students,

I looked up vector comparison standard. The comparison is
lexicographical. Meaning that vector v1 is less than v2 if the
first unequal element in v1 is less than in v2; or if v1 has the same
elements but shorter than v2. For example:

vector <int> v1 = {1, 2, 3, 4},
       	     v2 = {1, 2, 3, 5};

v1 is less than v2

vector <int> v3 = {1, 2, 3},
       	     v4 = {1, 2, 3, 4};

v3 is less than v4

More details are here:
  http://en.cppreference.com/w/cpp/algorithm/lexicographical_compare

Oh, and here is what I put in my .bashrc file to invoke clang as c++

    alias c++="clang++ -std=c++11"

Thanks,
-- 
Mikhail