[Boost-users] [mpl] Collapsing sequences of integer constants

Greetings, I'm trying to come up with an algorithm that will "collapse" a sequence of integer constants by adding like elements together. For example, typedef vector_c< int, 1,1,1,3,5,5,7,10,10 > input; would become: typedef vector_c< int, 3, 3, 10, 7, 20 > result; You can assume the sequence is already sorted. Would appreciate any tips. Thanks, Eric.