u

2026-06-21 13:11:31 +10:00
parent 3bce899398
commit 35c362681e
6 changed files with 533 additions and 0 deletions
@@ -0,0 +1,62 @@
+package top100liked
+
+import (
+	"fmt"
+	"testing"
+)
+
+// https://leetcode.cn/problems/add-two-numbers/description/?envType=study-plan-v2&envId=top-100-liked
+
+type ListNode struct {
+	Val  int
+	Next *ListNode
+}
+
+func addTwoNumbers(l1 *ListNode, l2 *ListNode) *ListNode {
+	dummy := &ListNode{}
+	p := dummy
+	carry := 0
+	for l1 != nil || l2 != nil || carry > 0 {
+		sum := carry
+		if l1 != nil {
+			sum += l1.Val
+			l1 = l1.Next
+		}
+		if l2 != nil {
+			sum += l2.Val
+			l2 = l2.Next
+		}
+		p.Next = &ListNode{Val: sum % 10}
+		p = p.Next
+		carry = sum / 10
+	}
+	return dummy.Next
+}
+
+func Test(t *testing.T) {
+	input1 := &ListNode{
+		Val: 2,
+		Next: &ListNode{
+			Val: 4,
+			Next: &ListNode{
+				Val:  3,
+				Next: nil,
+			},
+		},
+	}
+	input2 := &ListNode{
+		Val: 5,
+		Next: &ListNode{
+			Val: 6,
+			Next: &ListNode{
+				Val:  4,
+				Next: nil,
+			},
+		},
+	}
+	output := addTwoNumbers(input1, input2)
+	for output != nil {
+		fmt.Println(output.Val)
+		output = output.Next
+	}
+}