0763-partition-labels.py

class Solution:
    def partitionLabels(self, S: str) -> List[int]:
        count = {}
        res = []
        i, length = 0, len(S)
        for j in range(length):
            c = S[j]
            count[c] = j

        curLen = 0
        goal = 0
        while i < length:
            c = S[i]
            goal = max(goal, count[c])
            curLen += 1

            if goal == i:
                res.append(curLen)
                curLen = 0
            i += 1
        return res