Hey guys can some help me with loops in java

Question

i need to print this
1.000000000
2.000000000
4.000000000
8.000000000
16.000000000
32.000000000
64.000000000
128.000000000

Answer 1

run a loop for 8 times & by seeing pattern its ×2 series
//here is a simple code
int j=1;
for(int i=1;i<=8,i++){
System.out.println(j);
j=j*2;
}

Answer 2

Loop from 1 to 128
For the increment part dont use i++, find a relatiom between those numbers and how it increase.
Inside create another loop from 1to 8 then print 0