[Answer] 1. What is Indonesia's most populated island (2012 data)?

Step 1 : Introduction to the question "1. What is Indonesia's most populated island (2012 data)?"

...1. Java 2. Taiwan 3. Macau 4. Flores Java contains the capital as well as major cities such as Yogyakarta and Bandung. Flores is another island in Indonesia, and Taiwan and Macau belong to China.

[Ans] the efficient data structure to insert/delete a number in a stored set of numbers is?

Step 1 : Introduction to the question "the efficient data structure to insert/delete a number in a stored set of numbers is"

Each node contains two fields, called links, that are references to the previous and to the next node in the sequence of nodes. The beginning and ending nodes' previous and next links, respectively, point to some kind of terminator, typically a sentinel node or null, to facilitate traversal of the list. If there is only one sentinel node, then the list is circularly linked via the sentinel nod