Can you please explain me this code

#1

pls full dry run karke samghao kaise kaam kar rha he

#2

@deepak147852 you have to find the largest equal substring that can be formed by replacing at most k characters,
at first read what is substring.
so for example if k=2 and s= ‘ababaaabaaa’
so now if you replace 2 chacters optimaly that is at index 3 and index 7 you will get answer 9,
but if you replace any other 2 chacters you will get a wrong answer.

#3

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