Cb number problem

#1

getting one case wrong

#2

I have edited your code… Try to submit now…

#3

@yuktimutreja01
can you pls explain the approach I haven’t understood mine also

#4

The basic approach for solving the question is as follows :

  • Put loop on string that will give substring of every length.
  • create a function that will return true if the passed number is a CB number otherwise return false.
  • To put a check if the digit is already a part of the any other CB number, create an boolean array say, valid which store which digits till now has been a part of any other CB number.
  • Take a counter and increment if a CB number is found.
  • At the end print the count.