Some test cases got failed. For which test case my code is not working?

#1
#2

@mb129162
I think you misunderstood the question.
let met explain you the ques with an example :
The output for “ssaaas”
is s2a3s1
we just combine continuous characters only.

#3

Still some test cases are gettong failed

#4

@mb129162 There was a mistake in your code.
I have fixed that please have a look.