Program to get all the substring of the string in java

Hey all , this is queit popular interview question to write the program to find all the substring of the string in java

In my earlier post I have talked about Tower of Hanoi problem 
You can also see other Sorting program
Bubble Sort 
Selection Sort
Insertion Sort 

Here is my program

PROGRAM OF INSERTION SORT IN JAVA

The Time Complexity of the Program is - O(nlogn)


Output of the program

n
no
noe
noei
noeik
o
oe
oei
oeik
e
ei
eik
i
ik

k