Question

Simple question about for loop incrementing.... for (int a = 0; a < array.length; ++a){

Answer 1

a++

Answer 2

++a is prefix increment increment operator so a value gets updated before entering in the group.so u will get value associate to a+1 where you expect the value associated to a (in case of postfix operator a++(in place of (int a=0;a<array.length();a++))

Answer 3

*loop not group

Answer 4

What's the question?