Chewbacca and Number

#1

I dont understand what question want to say.what we have to do in the problem

#2

Hello @ikshit9
What the questtion is asking is basically that what is the possible smallest number we can get by interchanging digits (changing t to 9-t) .
Now if we already have the smallest number that can be : we will change 0 digits
Otherwise we will change some digits to make it the smallest number

For ex : 4545 has two digits which when interchanged will give a smaller number ( 5 when interchanged will give 4 ) so all the 5 in the number arre changed and the output becomes 4444.

Hint : Change all the numbers with value >4 . But keep in mind that you cannot make the first number 0.

#3

i made the program but why it isnot providing any output

#4

@ikshit9 your logic is correct but you are not implementing it in the correct way:

#5

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#6

in line number 25 and 29 why we are adding zero to it please help

#7

@ikshit9 we are doing this because initially the ch is in ascii value.
So.lets suppose if the digit is 1 then it’s ascii value is 49.and if we subtract 0 whose ascii value is 48 then the number will be 1.

#8

And for the same reason when we are adding we are making it again resemble as character according to their ascii value.like if the digit is 1 then if we add 0 to it in ascii value I.e 48 then we will get number corresponding to that ascii value as a char.