{"id":2701,"date":"2020-01-09T13:10:53","date_gmt":"2020-01-09T05:10:53","guid":{"rendered":"http:\/\/www.sniper97.cn\/?p=2701"},"modified":"2020-01-09T13:10:53","modified_gmt":"2020-01-09T05:10:53","slug":"%e3%80%90leetcode%e3%80%910002%e4%b8%a4%e6%95%b0%e7%9b%b8%e5%8a%a0","status":"publish","type":"post","link":"http:\/\/www.sniper97.cn\/index.php\/note\/algorithm\/2701\/","title":{"rendered":"\u3010LeetCode\u30110002\u4e24\u6570\u76f8\u52a0"},"content":{"rendered":"\n

https:\/\/leetcode-cn.com\/problems\/add-two-numbers<\/a><\/p>\n\n\n

\u4ee3\u7801\uff1a<\/p>\n\n\n

# -*- coding:utf-8 -*-

class ListNode(object):
    def __init__(self, x):
        self.val = x
        self.next = None


class Solution(object):
    def addTwoNumbers(self, l1, l2):
        \"\"\"
<\/em>        <\/em>:type<\/em><\/strong> l1: ListNode
<\/em>        <\/em>:type<\/em><\/strong> l2: ListNode
<\/em>        <\/em>:rtype<\/em><\/strong>: ListNode
<\/em>        \"\"\"
<\/em>        <\/em>ll1 = []
        while l1 != None:
            ll1.append(l1.val)
            l1 = l1.next
        ll2 = []
        while l2 != None:
            ll2.append(l2.val)
            l2 = l2.next
        input1 = ''
        for i in range(len(ll1) - 1, -1, -1):
            input1 = input1 + (str(ll1[i]))
        input2 = ''
        for i in range(len(ll2) - 1, -1, -1):
            input2 = input2 + (str(ll2[i]))
        sum_ = str(int(input1) + int(input2))
        return_list = []
        r1 = ListNode(int(sum_[-1]))
        r = r1
        for i in range(len(str(sum_)) - 2, -1, -1):
            return_list.append(int(sum_[i:i + 1]))
            temp = ListNode(int(sum_[i:i + 1]))
            r.next = temp
            r = r.next
        return r1


if __name__ == '__main__':
    n1 = ListNode(2)
    n2 = ListNode(4)
    n3 = ListNode(3)
    n4 = ListNode(5)
    n5 = ListNode(6)
    n6 = ListNode(4)
    n1.next = n2
    n2.next = n3
    n4.next = n5
    n5.next = n6
    print(Solution().addTwoNumbers(n1, n4))
<\/pre>\n\n\n
\u601d\u8def\uff1a<\/strong>\u8fd9\u9053\u9898\u8bf4\u5b9e\u8bdd\u6211\u601d\u8def\u662f\u5bf9\u7684\uff0c\u4f46\u662f\u4ee3\u7801\u56e0\u4e3a\u521a\u5f00\u59cb\u6ca1\u6709\u53d1\u73b0\u4e0a\u9762\u6ce8\u91ca\u7684ListNode\u7c7b\uff0c\u89c2\u5bdf\u4e86\u4e00\u4e0b\u8fd8\u4ee5\u4e3a\u4f20\u5165\u7684\u662f\u5217\u8868\uff0c\u5c31\u7528\u5217\u8868\u5199\u4e86\u4e00\u5957\uff0c\u540e\u6765\u5c31\u61d2\u7684\u6539\u4e86\uff0c\u76f4\u63a5\u628a\u4f20\u5165\u6570\u636e\u8f6c\u6210\u5217\u8868\u7136\u540e\u7ee7\u7eed\u7528\u4e4b\u524d\u7684\u4ee3\u7801\uff0c\u5b9e\u9645\u4e0a\u53ef\u4ee5\u7cbe\u7b80\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u5728\u904d\u5386\u94fe\u8868\u7684\u65f6\u5019\u5c31\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n\n\n
\u601d\u8003\uff1a<\/strong>\u67e5\u770b\u8bc4\u8bba\u53d1\u73b0\u6709\u6a21\u62df\u6574\u6570\u52a0\u6cd5\u8fd0\u7b97\u7684\u8fc7\u7a0b\u800c\u4e0d\u9700\u8981\u50cf\u6211\u4e00\u6837\u8f6c\u6362\u6210\u6570\u5b57\u540e\u518d\u76f8\u52a0\u3002<\/p>\n\n\n
def addTwoNumbers1(self, l1, l2):
    \"\"\"
<\/em>    <\/em>:type<\/em><\/strong> l1: ListNode
<\/em>    <\/em>:type<\/em><\/strong> l2: ListNode
<\/em>    <\/em>:rtype<\/em><\/strong>: ListNode
<\/em>    \"\"\"
<\/em>    <\/em>re = ListNode(0)
    r = re
    # \u8fdb\u4f4d\uff0c\u4e5f\u5c31\u662f\u8ba1\u7b97\u4e2a\u4f4d\u5982\u679c\u5927\u4e8e10\uff0c\u9700\u8981\u8fdb1\u4f4d\uff0c\u4fdd\u5b58\u8fd9\u4e2a1
    carry = 0
    # \u5982\u679c\u4efb\u610f\u4e00\u4e2a\u4e0d\u662fNone
    while (l1 or l2):
        # \u53d6\u503c
        x = l1.val if l1 else 0
        y = l2.val if l2 else 0
        # \u8ba1\u7b97\u5f53\u524d\u4f4d   \u4e0a\u4e00\u4e2a\u7684\u8fdb\u4f4d+\u4e24\u4e2a\u6570
        s = carry + x + y
        # \u8ba1\u7b97\u5f53\u524d\u4f4d\u7684\u8fdb\u4f4d
        carry = s \/\/ 10
        # \u521d\u59cb\u5316\u5e76\u8fde\u63a5\u5f53\u524d\u70b9
        r.next = ListNode(s % 10)
        r = r.next
        # \u5411\u4e0b\u904d\u5386
        if (l1 != None): l1 = l1.next
        if (l2 != None): l2 = l2.next
    # \u5168\u5904\u7406\u5b8c\u6210\u540e\u8fdb\u884c\u6700\u540e\u7684\u5904\u7406\uff08\u6700\u5927\u4f4d\u7684\u8fdb\u4f4d\uff09
    if (carry > 0):
        r.next = ListNode(1)
    return re.next<\/pre>\n","protected":false},"excerpt":{"rendered":"
https:\/\/leetcode-cn.com\/problems\/add-two-numbers \u4ee3 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[10],"tags":[],"views":1467,"_links":{"self":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/2701"}],"collection":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/comments?post=2701"}],"version-history":[{"count":0,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/2701\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/media?parent=2701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/categories?post=2701"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/tags?post=2701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}