why char aaray is used??..and describe line by line of this program.
Chewbcca prolblems
hi aman
as the number can be large you can use long long int as well. for simplicity char array is used.
and
The logic behind this Problem was pretty simple as we can invert any digit ( 9 - digit) but we need to invert only such digits that will eventually end up giving the smallest number possible.
So, we should invert only digits greater then or equal to 5 as after inverting them, the result gives us smallest number.
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