Can you help me out with this problem?

#1

I can’t understand how to approach it?

#2

Hey @isingh , here I am sharing one of the possible approaches :

According to the Problem the work is to find the Max CB numbers from the given number.

  • As to work on substrings of the given number, we will capture the element into the String instead of integer .
  • The number ‘n’ given is nothing to do with our approach(as we are working on String) but can be useful in other approaches.
    Intuition to solve this problem:
  • 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.
#3

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#4

https://ide.codingblocks.com/s/336031 . I am trying hard to debug the code but I don’t know where I am going wrong, please help me out.

#6

hello @isingh the problem in your code is that you are checking or running the loops till the end of the string .
you have to find the relation how can we do that .
here is the correct code according to your logic .

if you have problem in understanding any line please write here .
i will explain you .
Happy Learning !!