check whether these steps work:
step 1:
sort the given numbers in the decreasing order based on their first
digit.
step 2:
if two numbers come out to be equal in the above case & both of
their next digit exist then sort on the basis of their next digit, otherwise
the number
whose next digit doesnot exist should be placed before the other
number.
step 3:
concatenate these numbers.
e.g.
(0,1,10,100) sorting it gives: 1,10,100,0 => 1101000
(97,8,9) sorting gives: 9,97,8 => 9978
correct me if i'm wrong.
Shubham
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