It is not required that the values be sequential, or even that a navigator position map to a unique value.

这些值并不用循序排列，而且导览位置也不一定要对应至唯一值。

youdao

It is not required that the values be sequential, or even that a navigator position map to a unique value.

这些值并不用循序排列，而且导览位置也不一定要对应至唯一值。

youdao