lavos/cap3/ex12.go

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
}