I don't understand how to improve my code it is failing all test cases

#1
#2

Hi @10vaibhavsinghnegi,
Your approach is a bit faulty. See the test case:
2
aabbabaa
Here the correct output should be 5 but your code gives 4.

A better approach would be to start with l and r to mark left and right index of the string under inspection. Start from l=0, r=0, count=0, max = -1.

Start with r<length of string. Increment the count whenever you find a different character than the one you are using to build a string (example: if we are forming a string of an only, then b is a different char).

While count is greater than k, decrement the count by one if the element at i index is different.

Increment i.

Then, compare max with count for maximum value.

And finally, increment r.

#3

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