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// @Title: 划分字母区间 (Partition Labels)
// @Author: 15816537946@163.com
// @Date: 2019-11-18 10:18:33
// @Runtime: 0 ms
// @Memory: 2.4 MB
func partitionLabels(S string) []int {
	maxIndex := [26]int{}
	for i, v := range S {
		maxIndex[v-'a'] = i
	}

	begin := 0
	end := maxIndex[S[begin] - 'a']
	res := make([]int, 0, len(S))

	for i, v := range S {
		if i < end {
			end = max(end, maxIndex[v-'a'])
			continue
		}

		res = append(res, i-begin+1)
		begin = i + 1
		if begin < len(S) {
			end = maxIndex[S[begin]-'a']
		}
	}

	return res

}

func max(a,b int) int {
	if a > b {
		return a
	}
	return b
}
/*
func partitionLabels(S string) []int {
	maxIndex := [26]int{}
	for i, v := range S {
		maxIndex[v-'a'] = i
	}


	end := maxIndex[S[begin]-'a']
	res  := make([]int, 0, len(S))

	for i,v := range S {
		if i < end {
			end = max(end, maxIndex[v-'a'])
			continue
		}

		res = append(res, i-begin+1)
		begin = i+1
		if begin < len(S) {
			end = maxIndex[S[begin]-'a']
		}
	}

	return res
}

func max(a, b int) int {
	if a > b {
		return a
	}
	return b
}
*/