2. Add Two Numbers.go

package leetcode

import (
"github.com/halfrost/LeetCode-Go/structures"
)

// ListNode define
typeListNode= structures.ListNode

/**
 * Definition for singly-linked list.
 * type ListNode struct {
 * Val int
 * Next *ListNode
 * }
 */

funcaddTwoNumbers(l1*ListNode, l2*ListNode) *ListNode {
head:=&ListNode{Val: 0}
n1, n2, carry, current:=0, 0, 0, head
forl1!=nil||l2!=nil||carry!=0 {
ifl1==nil {
n1=0
 } else {
n1=l1.Val
l1=l1.Next
 }
ifl2==nil {
n2=0
 } else {
n2=l2.Val
l2=l2.Next
 }
current.Next=&ListNode{Val: (n1+n2+carry) %10}
current=current.Next
carry= (n1+n2+carry) /10
 }
returnhead.Next
}