first commit

go.mod

@@ -0,0 +1,3 @@
+module addTwoNumbers
+
+go 1.22

main.go

@@ -0,0 +1,86 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+)
+
+type ListNode struct {
+	Val  int
+	Next *ListNode
+}
+
+func (l *ListNode) Add(val int) {
+	newNode := &ListNode{Val: val}
+	current := l
+	for current.Next != nil {
+		current = current.Next
+	}
+	current.Next = newNode
+}
+func (l *ListNode) Get(index int) (int, error) {
+	current := l
+	for i := 0; i < index; i++ {
+		if current.Next != nil {
+			current = current.Next
+		} else {
+			return 0, errors.New("there is nothing to index at")
+		}
+
+	}
+	return current.Val, nil
+}
+func (l *ListNode) GetNr() int {
+	res := 0
+	multiplyer := 1
+	current := l
+	for current.Next != nil {
+		res = res + (current.Val * multiplyer)
+		multiplyer = multiplyer * 10
+		current = current.Next
+	}
+	res = res + (current.Val * multiplyer)
+	return res
+}
+func (l *ListNode) Length() int {
+	count := 0
+	if l.Val != 0 {
+		count++
+	}
+	current := l
+	for current.Next != nil {
+		current = current.Next
+		count++
+	}
+	return count
+}
+
+func addTwoNumbers(l1 *ListNode, l2 *ListNode) *ListNode {
+	s2 := strconv.Itoa(l1.GetNr() + l2.GetNr())
+	a := []rune(s2)
+	head := &ListNode{Val: 0}
+	res := head
+
+	for _, r := range a {
+		nr, err := strconv.Atoi(string(r))
+		if err != nil {
+			panic("lol")
+		}
+		res.Next = &ListNode{Val: nr}
+		res = res.Next
+
+	}
+	return head.Next
+}
+
+func main() {
+	l1 := ListNode{Val: 2}
+	l1.Add(4)
+	l1.Add(3)
+	l2 := ListNode{Val: 5}
+	l2.Add(6)
+	l2.Add(4)
+	l3 := addTwoNumbers(&l1, &l2)
+	fmt.Println(l3.GetNr())
+}