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package easy

import (
	"fmt"
	"math"
	"strings"
)

func HJ4(str string) string {
	if str == "" {
		return ""
	}
	var build strings.Builder
	length := int(math.Ceil(float64(len(str)) / 8.0))
	arr := make([]string, length)
	// len(str) <= 8
	if len(str) <= 8 {
		n := 8 - len(str)
		build.WriteString(str)
		for n > 0 {
			build.WriteString("0")
			n--
		}
		return build.String()
	}
	p1 := 0
	index := 0
	p2 := 7
	for p1 < len(str) {
		build.WriteString(string(str[p1]))
		if p1 == p2 {
			arr[index] = build.String()
			build.Reset()
			index++
			p2 = p1 + 8
		}
		p1++
	}
	if p1 < p2 {
		c := p2 - p1
		for c >= 0 {
			build.WriteString("0")
			c--
		}
		arr[index] = build.String()
	}
	res := ""
	for _, v := range arr {
		res += fmt.Sprintf("%s\n", v)
	}
	fmt.Println(arr)
	return res
}