package cap3

type HeightGrade int

// Ex12 身高统计，这里也是用的hashmap存结果
func Ex12(heights []int) []int {
    result := make([]int, 8)
    for _, height := range heights {
        // 身高映射，上下限调整
        mapping := height/5 - 29
        if mapping < 0 {
            mapping = 0
        } else if mapping > 7 {
            mapping = 7
        }

        result[mapping]++
    }

    return result
}