Smart Keypad-1 problem Test case 0 not passing

#1

The ouput is correct,Test case 0 is not passing .Please tell whats wrong.

#2

hi @ujj1804_1156aee80205d0bf
try this -->

#3

Thanks sir , My mistake was that i also took the condition
if(digit==0)
{
generate_names(in,out,i+1,j);
}
Due to which combinations including " " did not form right ?

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#4

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