求助一BitVector32 问题
哪位高手能给我讲下下面的题答案中参数1和-1的区别.
You are developing an application to assist the user in conducting electronic surveys. The survey consists of 25
true-or-false questions.
You need to perform the following tasks:
Initialize each answer to true.
Minimize the amount of memory used by each survey.
Which storage option should you choose?
A. BitVector32 answers = new BitVector32(1);
B. BitVector32 answers = new BitVector32(-1);
C. BitArray answers = new BitArray (1);
D. BitArray answers = new BitArray(-1);
Answer: B