Print all substrings of a given string

Objec­tive:  Given a string write an algorithm to print all the possible sub strings.

Example:

String input = “abcd”;
Output: Possible sub strings –

a          a b      a b c   a b c
b          b c      b c d
c          c d
d

Approach:

• Use nested loops.
• Outer loops will decide the starting point.
• First inner loops will decide the group size. Starting from 1 and goes up string character array size.
• Most inner loop will create the sub strings and print it.
• See the code below for more understanding.

Complete Code:

Output:

a
a b
a b c
a b c d
b
b c
b c d
c
c d
d