feat: reto mouredev#14 - go >> [E]

Retos/Reto #14 - OCTAL Y HEXADECIMAL [Fácil]/go/qwik-zgheib.go

@@ -0,0 +1,98 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type NumberConverter interface {
+	ToOctal(decimal int) string
+	ToHexadecimal(decimal int) string
+}
+
+type CustomNumberConverter struct{}
+
+func NewCustomNumberConverter() *CustomNumberConverter {
+	return &CustomNumberConverter{}
+}
+
+func (c *CustomNumberConverter) ToOctal(decimal int) string {
+	if decimal == 0 {
+		return "0"
+	}
+
+	isNegative := false
+	if decimal < 0 {
+		isNegative = true
+		decimal = -decimal
+	}
+
+	octal := ""
+	for decimal > 0 {
+		remainder := decimal % 8
+		octal = fmt.Sprintf("%d%s", remainder, octal)
+		decimal = decimal / 8
+	}
+
+	if isNegative {
+		octal = "-" + octal
+	}
+
+	return octal
+}
+
+func (c *CustomNumberConverter) ToHexadecimal(decimal int) string {
+	if decimal == 0 {
+		return "0"
+	}
+
+	isNegative := false
+	if decimal < 0 {
+		isNegative = true
+		decimal = -decimal
+	}
+
+	hexChars := "0123456789ABCDEF"
+	hexadecimal := ""
+	for decimal > 0 {
+		remainder := decimal % 16
+		hexadecimal = fmt.Sprintf("%c%s", hexChars[remainder], hexadecimal)
+		decimal = decimal / 16
+	}
+
+	if isNegative {
+		hexadecimal = "-" + hexadecimal
+	}
+
+	return hexadecimal
+}
+
+func readInput(prompt string) string {
+	reader := bufio.NewReader(os.Stdin)
+	fmt.Print(prompt)
+	input, _ := reader.ReadString('\n')
+	return strings.TrimSpace(input)
+}
+
+func getValidNumber() int {
+	for {
+		input := readInput("Enter a valid decimal number: ")
+		number, err := strconv.Atoi(input)
+		if err == nil {
+			return number
+		}
+		fmt.Println("Invalid input. Please enter a valid decimal number.")
+	}
+}
+
+func main() {
+	converter := NewCustomNumberConverter()
+
+	decimalNumber := getValidNumber()
+	fmt.Printf("Decimal: %d\n", decimalNumber)
+	fmt.Printf("Octal: %s\n", converter.ToOctal(decimalNumber))
+	fmt.Printf("Hexadecimal: %s\n", converter.ToHexadecimal(decimalNumber))
+}