From 8075f0696f886f8acf3a64f9bb6685410c80a63b Mon Sep 17 00:00:00 2001
From: Kade <kadefor@users.noreply.github.com>
Date: Sun, 23 Aug 2020 00:00:42 +0800
Subject: [PATCH] =?UTF-8?q?=E7=B2=BE=E7=AE=80=E4=BB=A3=E7=A0=81?=
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---
 .../2. Add Two Numbers.go                     | 35 +++++++------------
 1 file changed, 13 insertions(+), 22 deletions(-)

diff --git a/leetcode/0002.Add-Two-Numbers/2. Add Two Numbers.go b/leetcode/0002.Add-Two-Numbers/2. Add Two Numbers.go
index 5854bf659..714823d7a 100644
--- a/leetcode/0002.Add-Two-Numbers/2. Add Two Numbers.go	
+++ b/leetcode/0002.Add-Two-Numbers/2. Add Two Numbers.go	
@@ -16,36 +16,27 @@ type ListNode = structures.ListNode
  */
 
 func addTwoNumbers(l1 *ListNode, l2 *ListNode) *ListNode {
-	if l1 == nil || l2 == nil {
-		return nil
-	}
-	head := &ListNode{Val: 0, Next: nil}
+	head := &ListNode{Val: 0}
 	current := head
-	carry := 0
-	for l1 != nil || l2 != nil {
-		var x, y int
+
+	var n1, n2, carry int
+	for l1 != nil || l2 != nil || carry != 0 {
 		if l1 == nil {
-			x = 0
+			n1 = 0
 		} else {
-			x = l1.Val
+			n1 = l1.Val
+			l1 = l1.Next
 		}
 		if l2 == nil {
-			y = 0
+			n2 = 0
 		} else {
-			y = l2.Val
-		}
-		current.Next = &ListNode{Val: (x + y + carry) % 10, Next: nil}
-		current = current.Next
-		carry = (x + y + carry) / 10
-		if l1 != nil {
-			l1 = l1.Next
-		}
-		if l2 != nil {
+			n2 = l2.Val
 			l2 = l2.Next
 		}
+		current.Next = &ListNode{Val: (n1 + n2 + carry) % 10}
+		current = current.Next
+		carry = (n1 + n2 + carry) / 10
 	}
-	if carry > 0 {
-		current.Next = &ListNode{Val: carry % 10, Next: nil}
-	}
+
 	return head.Next
 }