TLE error showing.
SORTING IN LINEAR TIME
@Sakshi_Suman if simply using selection sort will give you All Clear then there isn’t any meaning of giving array containing only 0 1 and 2. there is some reason why array only contains 0 1 and 2 try to use it in your code.
then,tell me how to do it
use binary search. check if mid element is 0 swap it with the front if it is 2 swap it with the last.else if it is 1 just increase mid.
try implementing like this, if got any problem let me know.
did it! 
…
nice 
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