Flip String to Monotone Increasing

flip-string-to-monotone-increasing.py

class Solution:
    def minFlipsMonoIncr(self, s: str) -> int:
        oneCount, flipCount = 0,0                 # intially both are 0
        for c in s:
            if c == "1":
                oneCount += 1
            else:                                   # if not 1 then it's a zero
                if oneCount >= 1:       
                    flipCount += 1                  # in case we have already seen a zero, we will increase the flipCount 
            flipCount = min(flipCount, oneCount)    # we will do fip if it's count is less then # of 1's seen so far
        return flipCount