Leetcode 解題 Add Two Numbers Python

標籤：

原題：

You are given two linked lists representing two non-negative numbers.

The digits are stored in reverse order and each of their nodes contain a single digit

Add the two numbers and return it as a linked list

Input: (2->4->3) + (5->6->4)

Output: 7->0->8

代碼如下，遞迴調用add函數即可：

class Solution:    # @param {ListNode} l1    # @param{ListNode}l2    # return {ListNode}    def addTwoNumbers(self, l1, l2):        return self.add(l1, l2)    def add(self, l1, l2, s=0):        l = ListNode(s)        if l1:            l.val += l1.val            l1 = l1.next        if l2:            l.val += l2.val            l2 = l2.next        s= l.val/10        l.val = l.val % 10        if l1 or l2 or s: l.next = self.add(l1, l2, s)        return l

 

Leetcode 解題 Add Two Numbers Python