vector with reserve() is slightly faster than deque here.
vector with reserve() is slightly faster than deque here.

Change-Id: I9c2203662daa586e3fdbc9650b6ff61365c5bc60

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core