{"id":302,"date":"2020-09-26T10:22:09","date_gmt":"2020-09-26T02:22:09","guid":{"rendered":"http:\/\/39.96.58.60\/?p=302"},"modified":"2022-10-18T16:43:44","modified_gmt":"2022-10-18T08:43:44","slug":"leetcode-445-%e4%b8%a4%e6%95%b0%e7%9b%b8%e5%8a%a0-ii","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=302","title":{"rendered":"Leetcode 445. \u4e24\u6570\u76f8\u52a0 II"},"content":{"rendered":"<p>\u7ed9\u4f60\u4e24\u4e2a <strong>\u975e\u7a7a <\/strong>\u94fe\u8868\u6765\u4ee3\u8868\u4e24\u4e2a\u975e\u8d1f\u6574\u6570\u3002\u6570\u5b57\u6700\u9ad8\u4f4d\u4f4d\u4e8e\u94fe\u8868\u5f00\u59cb\u4f4d\u7f6e\u3002\u5b83\u4eec\u7684\u6bcf\u4e2a\u8282\u70b9\u53ea\u5b58\u50a8\u4e00\u4f4d\u6570\u5b57\u3002\u5c06\u8fd9\u4e24\u6570\u76f8\u52a0\u4f1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u94fe\u8868\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u5047\u8bbe\u9664\u4e86\u6570\u5b57 0 \u4e4b\u5916\uff0c\u8fd9\u4e24\u4e2a\u6570\u5b57\u90fd\u4e0d\u4f1a\u4ee5\u96f6\u5f00\u5934\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u8fdb\u9636\uff1a<\/strong><\/p>\n<p>\u5982\u679c\u8f93\u5165\u94fe\u8868\u4e0d\u80fd\u4fee\u6539\u8be5\u5982\u4f55\u5904\u7406\uff1f\u6362\u53e5\u8bdd\u8bf4\uff0c\u4f60\u4e0d\u80fd\u5bf9\u5217\u8868\u4e2d\u7684\u8282\u70b9\u8fdb\u884c\u7ffb\u8f6c\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>(7 -&gt; 2 -&gt; 4 -&gt; 3) + (5 -&gt; 6 -&gt; 4)\n\n<strong>\u8f93\u51fa\uff1a<\/strong>7 -&gt; 8 -&gt; 0 -&gt; 7\n\n<\/pre>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u94fe\u8868\u3001<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-python\" data-lang=\"Python\"><code>\n# -*- coding: utf-8 -*-\n# @Author  : LG\n\n\"\"\"\n\u6267\u884c\u7528\u65f6\uff1a64 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e86100.00% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.7 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e865.43% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5148\u627e\u5230\u957f\u94fe\u8868\u6bd4\u77ed\u94fe\u8868 \u524d\u90e8\u5206\u591a\u51fa\u7684\u4f4d\u7f6e\u3002\n    \u5c06\u591a\u51fa\u7684\u4f4d\uff0c\u76f4\u63a5\u6dfb\u52a0\u5230\u6700\u7ec8\u7ed3\u679c\u4e2d\uff0c\u7136\u540e\u5c06\u5bf9\u5e94\u4f4d\u7684\u503c\u76f8\u52a0\u4f5c\u4e3a\u5f53\u524d\u8282\u70b9\u7684\u503c\n    \u7136\u540e\u5904\u7406\u9012\u5f52\u8fdb\u4f4d\n    \u6700\u7ec8\uff0c\u5224\u65ad\u9996\u4f4d\u662f\u5426\u8fdb\u4f4d\n    \u5177\u4f53\u5b9e\u73b0\u89c1\u4ee3\u7801\u6ce8\u91ca\n\"\"\"\nclass Solution:\n    def addTwoNumbers(self, l1: ListNode, l2: ListNode) -&gt; ListNode:\n        p, q = l1, l2   # p,q \u6307\u9488\u5206\u522b\u6307\u5411\u4e24\u4e2a\u94fe\u8868\n        while p and q:  # \u627e\u51fa\u4e00\u4e2a\u957f\u94fe\u8868\u6bd4\u77ed\u94fe\u8868\u957f\u51fa\u7684\u90e8\u5206\n            p = p.next\n            q = q.next\n        if p:           # \u5982\u679cp \u6307\u9488\u5269\u4f59\uff0c \u5219l1\u957fl2\u77ed\uff0c \u521d\u59cb\u5316pl,ps\u6307\u9488\uff0c\u5206\u522b\u6307\u5411\u957f\u77ed\u94fe\u8868\n            pl, ps = l1, l2\n            p = p\n        else:\n            pl, ps = l2, l1\n            p = q\n\n        result = ListNode(0)    # \u7528\u4e8e\u8bb0\u5f55\u6700\u7ec8\u7ed3\u679c\n        r = result  # \u6700\u7ec8\u7ed3\u679c\u6307\u9488\n        while p:    # \u8d70\u5b8c\u957f\u94fe\u8868\u5269\u4f59\u6ca1\u8d70\u5b8c\u7684\u90e8\u5206\uff0cpl\u627e\u5230\u957f\u94fe\u8868\u524d\u534a\u90e8\u5206\u591a\u51fa\u7684\u90e8\u4f4d\uff0c\u76f4\u63a5\u6dfb\u52a0\u5230result\u4e2d\n            r.next = pl\n            r = r.next\n\n            pl = pl.next\n            p = p.next\n\n        while pl and ps:    # \u8d70\u7684\u5269\u4f59\u90e8\u5206\u76f8\u540c\u65f6\uff0c\u540c\u65f6\u79fb\u52a8pl,ps\uff0c \u8ba1\u7b97\u5bf9\u5e94\u8282\u70b9\u503c\u7684\u548c\n            pl.val += ps.val\n            r.next = pl\n            r = r.next\n\n            pl = pl.next    # \u540c\u65f6\u79fb\u52a8pl,ps\n            ps = ps.next\n\n        def carry(node):    # \u9012\u5f52\u5904\u7406\u8fdb\u4f4d\n            if node.next:\n                node_next = carry(node.next)    # \u5982\u679c\u5f53\u524d\u8282\u70b9\u4e0b\u4e00\u4f4d\u5b58\u5728\uff0c\u7ee7\u7eed\u904d\u5386\n                c = node_next.val \/\/ 10         # \u8ba1\u7b97\u8fdb\u4f4d\n                node.val = node.val + c         # \u5f53\u524d\u8282\u70b9\u503c = \u5f53\u524d\u8282\u70b9\u503c + \u4e0b\u4e00\u4f4d\u7684\u8fdb\u4f4d\n                node_next.val = node_next.val % 10  # \u66f4\u65b0\u4e0b\u4e00\u4f4d\u7684\u503c\n\n            return node\n\n        node = carry(result)\n\n        if node.val &gt; 0:    # \u5904\u7406\u9996\u4f4d\u662f\u5426\u8fdb\u4f4d\n            return node\n        else:\n            return node.next<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u4f60\u4e24\u4e2a \u975e\u7a7a \u94fe\u8868\u6765\u4ee3\u8868\u4e24\u4e2a\u975e\u8d1f\u6574\u6570\u3002\u6570\u5b57\u6700\u9ad8\u4f4d\u4f4d\u4e8e\u94fe\u8868\u5f00\u59cb\u4f4d\u7f6e\u3002\u5b83\u4eec\u7684\u6bcf\u4e2a\u8282\u70b9\u53ea\u5b58\u50a8\u4e00\u4f4d\u6570\u5b57\u3002\u5c06\u8fd9\u4e24\u6570\u76f8\u52a0&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/302"}],"collection":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=302"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/302\/revisions"}],"predecessor-version":[{"id":303,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/302\/revisions\/303"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=302"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}