Can you help find the mistake in my code

#1

my sample testcase output is correct and i tried the output for other inputs ,which was also coming correct.

#2

use string to store result
idk char array is giving error probably size issue

#3

how to print the answer in reverse order without using a stack.can we do it using recursion only?

#4

I am not using stack
i am simply sorting the vector

#5

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