131 lines
3.2 KiB
Plaintext
131 lines
3.2 KiB
Plaintext
package mathUtil
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import (
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"errors"
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"math"
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"sort"
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)
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//同时计算上中下四分位数
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func Quartile_Int(intList []int) (lowerquartile, midquartile, upperquartile float64, err error) {
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n := len(intList)
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if n == 0 {
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err = errors.New("List is empty")
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return
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}
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//长度大于等于2的情况
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//排序 升序
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sort.Ints(intList)
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lowerquartile, err = Quartile_Int_Lower(intList, true)
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if err != nil {
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return
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}
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midquartile, err = Quartile_Int_Mid(intList, true)
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if err != nil {
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return
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}
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upperquartile, err = Quartile_Int_Upper(intList, true)
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if err != nil {
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return
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}
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return
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}
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// 计算整数数组下四分为数据
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func Quartile_Int_Lower(intList []int, isSorted bool) (lowerquartile float64, err error) {
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n := len(intList)
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if n == 0 {
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err = errors.New("List is empty")
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return
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}
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//如果长度为1，则上、中、下四分为数都等于该值
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if n == 1 {
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lowerquartile = float64(intList[0])
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return
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}
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//长度大于等于2的情况
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//排序 升序 ,如果数据没有排序，则排序
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if !isSorted {
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sort.Ints(intList)
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}
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//计算下四分位数位置
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lowerPosition := 1 + float64(n-1)*0.25
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intPart, deciPart := math.Modf(lowerPosition)
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//将整数部分转换为int类型，成为取数据的索引
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index := int(intPart)
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if index < 1 || index > n-1 {
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err = errors.New("Quartile_Int_Lower Index Out of Range")
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return
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}
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lowerquartile = float64(intList[index-1])*(1-deciPart) + float64(intList[index])*deciPart
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return
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}
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// 计算整数数组中四分为数据
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func Quartile_Int_Mid(intList []int, isSorted bool) (midquartile float64, err error) {
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n := len(intList)
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if n == 0 {
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err = errors.New("List is empty")
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return
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}
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//如果长度为1，则上、中、下四分为数都等于该值
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if n == 1 {
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midquartile = float64(intList[0])
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return
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}
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//长度大于等于2的情况
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//排序 升序 ,如果数据没有排序，则排序
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if !isSorted {
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sort.Ints(intList)
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}
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//计算下四分位数位置
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lowerPosition := 1 + float64(n-1)*0.5
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intPart, deciPart := math.Modf(lowerPosition)
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//将整数部分转换为int类型，成为取数据的索引
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index := int(intPart)
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if index < 1 || index > n-1 {
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err = errors.New("Quartile_Int_Mid Index Out of Range")
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return
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}
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midquartile = float64(intList[index-1])*(1-deciPart) + float64(intList[index])*deciPart
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return
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}
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// 计算整数数组上四分为数据
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func Quartile_Int_Upper(intList []int, isSorted bool) (upperquartile float64, err error) {
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n := len(intList)
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if n == 0 {
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err = errors.New("List is empty")
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return
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}
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//如果长度为1，则上、中、下四分为数都等于该值
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if n == 1 {
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upperquartile = float64(intList[0])
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return
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}
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//长度大于等于2的情况
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//排序 升序 ,如果数据没有排序，则排序
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if !isSorted {
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sort.Ints(intList)
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}
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//计算下四分位数位置
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lowerPosition := 1 + float64(n-1)*0.75
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intPart, deciPart := math.Modf(lowerPosition)
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//将整数部分转换为int类型，成为取数据的索引
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index := int(intPart)
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if index < 1 || index > n-1 {
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err = errors.New("Quartile_Int_Upper Index Out of Range")
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return
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}
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upperquartile = float64(intList[index-1])*(1-deciPart) + float64(intList[index])*deciPart
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return
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}
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