Bug Report for https://neetcode.io/problems/minimum-window-with-characters

Language: Python

In the sliding window solution, the line

have, need = 0, len(countT)

has incorrect initialization. It should not be length of countT as it is since t might have duplicates. This fails for test case:

s = "aa"
t = "aa"

Correction is:

have, need = 0, len(countT.keys())