Why is this code not working?

#1


i am getting all wrong WAs

#2

hello @Parikalp10

sort ur input string before genrating all valid permuations.
doing this will ensure that the all generated strings r in sorted order.

ur updated code->

#3

Thank you. I had one more doubt that why is there not a need to backtrack over here?

#4

just print all strings (valid/invalid both) and observe the pattern.

u will find that all the strings are generated in lexicographical order.

#5

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