💡 Chewbacca and Number

#1

What should be the output for
1234

#2

9765 is the output of this

#3

How is this minimum possible number as per the question it is greater than the input.

#4

my mistake i thought it of bigger number

for 1234
ans is 1234 as it is minimum and no number cann be formed minimum y doing 9-number

#5

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