{"id":393,"date":"2026-01-16T22:53:13","date_gmt":"2026-01-16T14:53:13","guid":{"rendered":"https:\/\/jdoxk3.cn\/?p=393"},"modified":"2026-01-17T01:30:03","modified_gmt":"2026-01-16T17:30:03","slug":"%e4%bb%a3%e7%a0%81%e9%9a%8f%e6%83%b3%e5%bd%95%e7%ae%97%e6%b3%95%e8%ae%ad%e7%bb%83%e8%90%a5%e7%ac%ac%e5%9b%9b%e5%a4%a9-24-%e4%b8%a4%e4%b8%a4%e4%ba%a4%e6%8d%a2%e9%93%be%e8%a1%a8%e4%b8%ad%e7%9a%84","status":"publish","type":"post","link":"https:\/\/jdoxk3.cn\/index.php\/2026\/01\/16\/%e4%bb%a3%e7%a0%81%e9%9a%8f%e6%83%b3%e5%bd%95%e7%ae%97%e6%b3%95%e8%ae%ad%e7%bb%83%e8%90%a5%e7%ac%ac%e5%9b%9b%e5%a4%a9-24-%e4%b8%a4%e4%b8%a4%e4%ba%a4%e6%8d%a2%e9%93%be%e8%a1%a8%e4%b8%ad%e7%9a%84\/","title":{"rendered":"\u4ee3\u7801\u968f\u60f3\u5f55\u7b97\u6cd5\u8bad\u7ec3\u8425\u7b2c\u56db\u5929 | 24.\u4e24\u4e24\u4ea4\u6362\u94fe\u8868\u4e2d\u7684\u8282\u70b9\uff0c19.\u5220\u9664\u94fe\u8868\u7684\u5012\u6570\u7b2cN \u4e2a\u8282\u70b9\uff0c02.07.\u94fe\u8868\u76f8\u4ea4\uff0c142.\u73af\u5f62\u94fe\u8868II"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u524d\u8a00<\/h1>\n\n\n\n<p>\u4eca\u5929\u662f\u7b97\u6cd5\u8bad\u7ec3\u8425\u7684\u7b2c\u56db\u5929\uff0c\u4eca\u5929\u7684\u4e3b\u9898\u4f9d\u65e7\u662f\u94fe\u8868\u4f46\u662f\u9898\u76ee\u96be\u5ea6\u6709\u6240\u4e0a\u5347\uff0c\u7ecf\u8fc7\u51e0\u5929\u7684\u8bad\u7ec3\u540e\uff0c\u660e\u663e\u611f\u89c9\u5230\u73b0\u5728\u5bf9\u4e8e\u9898\u76ee\u7684\u60f3\u6cd5\u589e\u52a0\u4e86\u8bb8\u591a\uff0c\u7edd\u975e\u4ee5\u5f80\u770b\u5230\u9898\u76ee\u4e0d\u4f1a\u505a\u5c31\u5148\u53bb\u770b\u9898\u89e3\uff0c\u5728\u5b66\u4e60\u9898\u89e3\u601d\u8def\u7684\u57fa\u7840\u4e0a\u4e5f\u4f1a\u60f3\u60f3\u6709\u6ca1\u6709\u5176\u4ed6\u65b9\u6cd5\u4e5f\u80fd\u5f97\u5230\u7b54\u6848\u3002<\/p>\n\n\n\n<p>\u5e0c\u671b\u518d\u8fc7\u51e0\u5929\u80fd\u591f\u5c06 go \u8bed\u8a00\u4e5f\u8fd0\u7528\u5230\u7b97\u6cd5\u8bad\u7ec3\u91cc\uff0c\u8ba9 go \u8bed\u8a00\u529f\u5e95\u540c\u6b65\u63d0\u5347\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">24.\u4e24\u4e24\u4ea4\u6362\u94fe\u8868\u4e2d\u7684\u8282\u70b9<\/h1>\n\n\n\n<p>\u9898\u76ee\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/swap-nodes-in-pairs\/\">24. \u4e24\u4e24\u4ea4\u6362\u94fe\u8868\u4e2d\u7684\u8282\u70b9<\/a><\/p>\n\n\n\n<p>\u9898\u76ee\u63cf\u8ff0\uff1a<\/p>\n\n\n\n<p>\u7ed9\u4f60\u4e00\u4e2a\u94fe\u8868\uff0c\u4e24\u4e24\u4ea4\u6362\u5176\u4e2d\u76f8\u90bb\u7684\u8282\u70b9\uff0c\u5e76\u8fd4\u56de\u4ea4\u6362\u540e\u94fe\u8868\u7684\u5934\u8282\u70b9\u3002\u4f60\u5fc5\u987b\u5728\u4e0d\u4fee\u6539\u8282\u70b9\u5185\u90e8\u7684\u503c\u7684\u60c5\u51b5\u4e0b\u5b8c\u6210\u672c\u9898\uff08\u5373\uff0c\u53ea\u80fd\u8fdb\u884c\u8282\u70b9\u4ea4\u6362\uff09\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u7684\u5b9e\u73b0\u5927\u81f4\u662f\u5728\u7528\u4ee3\u7801\u6a21\u62df\u4e24\u4e24\u4ea4\u6362\u7684\u6b65\u9aa4\uff0c\u5047\u5982\u6709\u56db\u4e2a\u8282\u70b9\u5206\u522b\u4e3a1 2 3 4\uff0c\u90a3\u4e48\u4e24\u4e24\u4ea4\u6362\u540e\u5c31\u662f 2 1 4 3\uff0c\u901a\u8fc7\u89c2\u5bdf\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u8fdb\u884c\u6b65\u9aa4\u6a21\u62df\u3002<\/p>\n\n\n\n<p>\u9996\u5148\uff0c\u8ba9 1 \u6307\u5411 4\uff0c\u518d\u8ba9 2 \u6307\u5411 1\u8fd9\u6837\u6211\u4eec\u5c31\u5b8c\u6210\u4e86\u4e00\u5bf9\u8282\u70b9\u7684\u4e24\u4e24\u4ea4\u6362\uff0c\u63a5\u4e0b\u6765\u5faa\u73af\u5230\u94fe\u8868\u7ed3\u675f\u5c31\u597d\uff0c\u8fd9\u91cc\u7684\u5177\u4f53\u6b65\u9aa4\u8fd8\u662f\u7528\u753b\u56fe\u7684\u65b9\u5f0f\u66f4\u52a0\u76f4\u89c2\u4e00\u4e9b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6a21\u62df\u6b65\u9aa4\u5b9e\u73b0\u5199\u6cd5<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>class Solution:\n    def swapPairs(self, head: Optional&#91;ListNode]) -&gt; Optional&#91;ListNode]:\n        dummyHead = ListNode(None, head)\n        cur = dummyHead\n        while cur.next and cur.next.next:\n            temp = cur.next\n            temp2 = cur.next.next.next\n            cur.next = cur.next.next\n            cur.next.next = temp\n            cur.next.next.next = temp2\n            \n            cur = cur.next.next\n        result = dummyHead.next\n        return result<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">19.\u5220\u9664\u94fe\u8868\u5012\u6570\u7b2cN\u4e2a\u7ed3\u70b9<\/h1>\n\n\n\n<p>\u9898\u76ee\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/remove-nth-node-from-end-of-list\/\">19. \u5220\u9664\u94fe\u8868\u7684\u5012\u6570\u7b2c N \u4e2a\u7ed3\u70b9<\/a><\/p>\n\n\n\n<p>\u9898\u76ee\u63cf\u8ff0\uff1a<\/p>\n\n\n\n<p>\u7ed9\u4f60\u4e00\u4e2a\u94fe\u8868\uff0c\u5220\u9664\u94fe\u8868\u7684\u5012\u6570\u7b2c n \u4e2a\u7ed3\u70b9\uff0c\u5e76\u4e14\u8fd4\u56de\u94fe\u8868\u7684\u5934\u7ed3\u70b9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u6700\u7ec8\u4f7f\u7528\u4e86\u4e24\u79cd\u601d\u8def\u5f97\u5230\u4e24\u4e2a\u89e3\u6cd5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u89e3\u6cd5\u4e00\u6bd4\u8f83\u5bb9\u6613\u7406\u89e3\uff0c\u9996\u5148\u904d\u5386\u94fe\u8868\u6709\u591a\u5c11\u4e2a\u5143\u7d20\u5e76\u8fdb\u884c\u8bb0\u5f55\uff0c\u52a0\u5165\u4e86\u865a\u62df\u5934\u8282\u70b9\u540e\uff0c\u5982\u679c\u6211\u4eec\u8981\u5220\u9664\u5012\u6570\u7b2cN\u4e2a\u5143\u7d20\uff0c\u90a3\u4e48\u53ea\u8981\u79fb\u52a8\u5230\u7b2ccount &#8211; n \u4e2a\u8282\u70b9\u7684\u4f4d\u7f6e\uff0c\u518d\u6267\u884c\u94fe\u8868\u5220\u9664\u7684\u57fa\u672c\u64cd\u4f5c\u5c31\u884c<\/li>\n\n\n\n<li>\u89e3\u6cd5\u4e8c\u6bd4\u8f83\u5de7\u5999\uff0c\u4f7f\u7528\u5230\u4e86\u5feb\u6162\u6307\u9488\u7684\u601d\u60f3\uff0c\u5b9a\u4e49\u4e00\u5806\u5feb\u6162\u6307\u9488\uff0c\u5982\u679c\u60f3\u5220\u9664\u5012\u6570\u7b2cN \u4e2a\u5143\u7d20\uff0c\u90a3\u4e48\u53ea\u9700\u8981\u5148\u8ba9\u5feb\u6307\u9488\u6bd4\u6162\u6307\u9488\u591a\u8dd1N+1\u6b65\uff0c\u7136\u540e\u518d\u8ba9\u4e24\u4e2a\u6307\u9488\u4ee5\u76f8\u540c\u7684\u901f\u5ea6\u5411\u540e\u626b\u63cf\uff0c\u6700\u540e\u5f53\u5feb\u6307\u9488\u79fb\u52a8\u5230\u672b\u5c3e\u65f6\uff0c\u6162\u6307\u9488\u7684\u4f4d\u7f6e\u6b63\u597d\u5c31\u662f\u5012\u6570\u7b2cN &#8211; 1 \u4e2a\u8282\u70b9\uff0c\u6b64\u65f6\u518d\u8fdb\u884c\u94fe\u8868\u57fa\u672c\u5220\u9664\u64cd\u4f5c\u5c31\u884c<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e00\u5b9e\u73b0\u5199\u6cd5\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>class Solution:\n    def removeNthFromEnd(self, head: Optional&#91;ListNode], n: int) -&gt; Optional&#91;ListNode]:\n        dummyHead = ListNode(None, head)\n        cur = dummyHead\n        count = 0\n        while cur.next:\n            cur = cur.next\n            count += 1\n       \n        cur = dummyHead\n\n        for i in range(count - n):\n            cur = cur.next\n        cur.next = cur.next.next\n        return dummyHead.next<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u5feb\u6162\u6307\u9488\u5b9e\u73b0\u5199\u6cd5\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>class Solution:\n    def removeNthFromEnd(self, head: Optional&#91;ListNode], n: int) -&gt; Optional&#91;ListNode]:\n        dummyHead = ListNode(None, head)\n        slow = dummyHead\n        fast = dummyHead\n        for i in range(n + 1):\n            fast = fast.next\n        \n        while fast:\n            fast = fast.next\n            slow = slow.next\n        slow.next = slow.next.next\n        return dummyHead.next<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">02.07.\u94fe\u8868\u76f8\u4ea4<\/h1>\n\n\n\n<p>\u9898\u76ee\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/intersection-of-two-linked-lists-lcci\/\">\u9762\u8bd5\u9898 02.07. \u94fe\u8868\u76f8\u4ea4<\/a><\/p>\n\n\n\n<p>\u9898\u76ee\u63cf\u8ff0\uff1a<\/p>\n\n\n\n<p>\u7ed9\u4f60\u4e24\u4e2a\u5355\u94fe\u8868\u7684\u5934\u8282\u70b9 <code>headA<\/code> \u548c <code>headB<\/code> \uff0c\u8bf7\u4f60\u627e\u51fa\u5e76\u8fd4\u56de\u4e24\u4e2a\u5355\u94fe\u8868\u76f8\u4ea4\u7684\u8d77\u59cb\u8282\u70b9\u3002\u5982\u679c\u4e24\u4e2a\u94fe\u8868\u6ca1\u6709\u4ea4\u70b9\uff0c\u8fd4\u56de <code>null<\/code> \u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p>\u521a\u89c1\u5230\u8fd9\u9053\u9898\u89c9\u5f97\u6709\u70b9\u4f3c\u66fe\u76f8\u8bc6\uff0c\u7591\u4f3c\u662f\u534a\u5e74\u524d\u770b\u5230\u7684\u8389\u8389\u4e1d\u7b14\u8bd5\u771f\u9898\u3002\u56e0\u4e3a\u719f\u6089\uff0c\u6240\u4ee5\u5bf9\u8fd9\u6761\u9898\u683c\u5916\u5173\u6ce8\uff0c\u6700\u7ec8\u4f7f\u7528\u5230\u4e86\u4e09\u79cd\u89e3\u6cd5\u6765\u89e3\u51b3\u8fd9\u9053\u9898\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u89e3\u6cd5\u4e00\uff1a\u5728\u5224\u65ad\u94fe\u8868\u76f8\u4ea4\u65f6\uff0c\u6211\u4eec\u5173\u6ce8\u7684\u4e0d\u662f\u8282\u70b9\u7684\u6570\u503c\u662f\u5426\u76f8\u7b49\uff0c\u800c\u662f\u4e24\u4e2a\u8282\u70b9\u662f\u5426\u76f8\u540c\uff0c\u5982\u679c\u76f8\u540c\u90a3\u4e48\u4ee3\u8868\u76f8\u4ea4\u3002\u5173\u4e8e\u8fd9\u9053\u95ee\u9898\uff0c\u6211\u4eec\u4e0d\u59a8\u5047\u8bbe A \u548c B \u5b58\u5728\u76f8\u4ea4\u90e8\u5206\uff0c\u90a3\u4e48\u6211\u4eec\u5c06 A \u548c B \u8fde\u63a5\u5230\u540c\u4e00\u6761\u94fe\u8868\u4e0a\uff0c\u7531\u4e8e\u901f\u5ea6\u76f8\u540c\u4f46\u662f\u8d70\u7684\u8def\u7a0b\u4e0d\u540c\uff0c\u4e24\u8005\u5fc5\u7136\u6700\u7ec8\u76f8\u4ea4\uff0c\u5e76\u4e14\u7b2c\u4e00\u6b21\u76f8\u4ea4\u7684\u4f4d\u7f6e\u5c31\u662f\u4ea4\u70b9\u3002\u8fde\u5230\u4e00\u6761\u94fe\u8868\u7684\u903b\u8f91\u662f\u5982\u679c\u6307\u9488A\u8d70\u5230\u94fe\u8868A\u7684\u672b\u5c3e\uff0c\u90a3\u4e48\u4e0b\u4e00\u6b65\u6765\u5230\u94fe\u8868B\u7684\u5934\u90e8\uff0c\u94fe\u8868B\u540c\u7406\u3002<\/li>\n\n\n\n<li>\u89e3\u6cd5\u4e8c\uff1a\u6734\u5b9e\u65e0\u534e\u7684\u66b4\u529b\uff0c\u4f46\u662f\u8fd9\u91cc\u529b\u6263\u4f7f\u7528\u5927\u6570\u636e\u6d4b\u8bd5\u7528\u4f8b\u5bfc\u81f4\u8d85\u65f6\u65e0\u6cd5\u901a\u8fc7\uff0c\u5177\u4f53\u6b65\u9aa4\u5c31\u662f\u5bf9A\u7684\u6bcf\u4e00\u4e2a\u8282\u70b9\u90fd\u8ba9B\u5faa\u73af\u4e00\u6b21\u5224\u65ad\u5728 B \u4e0a\u662f\u5426\u6709\u76f8\u540c\u8282\u70b9\uff0c\u5982\u679c\u6709\u90a3\u4e48\u5c31\u662f\u4ea4\u70b9\u3002<\/li>\n\n\n\n<li>\u89e3\u6cd5\u4e09\uff1a\u89e3\u6cd5\u4e09\u5b66\u4e60\u81ea\u5361\u5c14\u6587\u6863\uff0c\u9996\u5148\u8bb0\u5f55\u4e0b\u4e24\u4e2a\u94fe\u8868\u7684\u957f\u5ea6\u5e76\u8fdb\u884c\u6bd4\u8f83\uff0c\u8ba9\u66f4\u957f\u7684\u4e00\u6761\u7ebf\u79fb\u52a8lenthA-lenthB\u6b21\uff08\u6b64\u5904\u5047\u8bbe A \u957f B \u77ed\uff09\uff0c \u8fd9\u6837\u4e00\u6765\u4e24\u8005\u5728\u540c\u4e00\u8d77\u70b9\u4f4d\u7f6e\u4e0a\uff0c\u63a5\u4e0b\u6765\u4e24\u4e2a\u6307\u9488\u4ee5\u76f8\u540c\u901f\u5ea6\u79fb\u52a8\uff0c\u5982\u679c\u51fa\u73b0\u8282\u70b9\u76f8\u7b49\u90a3\u4e48\u8bf4\u660e\u4e24\u4e2a\u94fe\u8868\u76f8\u4ea4\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e00\u5b9e\u73b0\u5199\u6cd5\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>class Solution:\n    def getIntersectionNode(self, headA: ListNode, headB: ListNode) -&gt; ListNode:\n        if not headA or not headB:\n            return None\n            \n        pointerA = headA\n        pointerB = headB\n        \n        # \u4e24\u4e2a\u6307\u9488\u540c\u65f6\u904d\u5386\u4e24\u4e2a\u94fe\u8868\n        # \u5f53 pointerA \u5230\u8fbe\u94fe\u8868A\u672b\u5c3e\u65f6\uff0c\u8f6c\u5230\u94fe\u8868B\u7684\u5f00\u5934\n        # \u5f53 pointerB \u5230\u8fbe\u94fe\u8868B\u672b\u5c3e\u65f6\uff0c\u8f6c\u5230\u94fe\u8868A\u7684\u5f00\u5934\n        # \u8fd9\u6837\u4e24\u4e2a\u6307\u9488\u4f1a\u8d70\u8fc7\u76f8\u540c\u7684\u603b\u957f\u5ea6\uff08A+B\uff09\n        \n        while pointerA != pointerB:\n            pointerA = pointerA.next if pointerA else headB\n            pointerB = pointerB.next if pointerB else headA\n        \n        # \u8981\u4e48\u5728\u4ea4\u70b9\u76f8\u9047\uff0c\u8981\u4e48\u90fd\u4e3a None\uff08\u6ca1\u6709\u4ea4\u70b9\uff09\n        return pointerA<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e8c\u5b9e\u73b0\u5199\u6cd5\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>class Solution:\n    def getIntersectionNode(self, headA: ListNode, headB: ListNode) -> ListNode:\n        pointA = headA\n      \n        while pointA:\n            pointB = headB \n            while pointB:\n                if pointA == pointB: \n                    return pointA\n                pointB = pointB.next\n            pointA = pointA.next\n        \n        return None <\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e09\u5b9e\u73b0\u5199\u6cd5<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>class Solution:\n    def getIntersectionNode(self, headA: ListNode, headB: ListNode) -&gt; ListNode:\n        def ctlenth(head:ListNode) -&gt; int:\n            count = 0\n            temp = head\n            while temp:\n                temp = temp.next\n                count += 1\n            return count\n        \n        lenA = ctlenth(headA)\n        pointA = headA\n        lenB = ctlenth(headB)\n        pointB = headB\n        if lenA &gt; lenB:\n            for i in range(lenA - lenB):\n                pointA = pointA.next\n        elif lenB &gt; lenA:\n            for i in range(lenB - lenA):\n                pointB = pointB.next\n        \n        while pointA:\n            if pointA == pointB:\n                return pointA\n            else:\n                pointA = pointA.next\n                pointB = pointB.next\n        return None<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">142.\u73af\u5f62\u94fe\u8868II<\/h1>\n\n\n\n<p>\u9898\u76ee\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/linked-list-cycle-ii\/\">142. \u73af\u5f62\u94fe\u8868 II<\/a><\/p>\n\n\n\n<p>\u9898\u76ee\u63cf\u8ff0\uff1a<\/p>\n\n\n\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u94fe\u8868\u7684\u5934\u8282\u70b9 <code>head<\/code> \uff0c\u8fd4\u56de\u94fe\u8868\u5f00\u59cb\u5165\u73af\u7684\u7b2c\u4e00\u4e2a\u8282\u70b9\u3002 <em>\u5982\u679c\u94fe\u8868\u65e0\u73af\uff0c\u5219\u8fd4\u56de <code>null<\/code>\u3002<\/em><\/p>\n\n\n\n<p>\u5982\u679c\u94fe\u8868\u4e2d\u6709\u67d0\u4e2a\u8282\u70b9\uff0c\u53ef\u4ee5\u901a\u8fc7\u8fde\u7eed\u8ddf\u8e2a <code>next<\/code> \u6307\u9488\u518d\u6b21\u5230\u8fbe\uff0c\u5219\u94fe\u8868\u4e2d\u5b58\u5728\u73af\u3002 \u4e3a\u4e86\u8868\u793a\u7ed9\u5b9a\u94fe\u8868\u4e2d\u7684\u73af\uff0c\u8bc4\u6d4b\u7cfb\u7edf\u5185\u90e8\u4f7f\u7528\u6574\u6570 <code>pos<\/code> \u6765\u8868\u793a\u94fe\u8868\u5c3e\u8fde\u63a5\u5230\u94fe\u8868\u4e2d\u7684\u4f4d\u7f6e\uff08<strong>\u7d22\u5f15\u4ece 0 \u5f00\u59cb<\/strong>\uff09\u3002\u5982\u679c <code>pos<\/code> \u662f <code>-1<\/code>\uff0c\u5219\u5728\u8be5\u94fe\u8868\u4e2d\u6ca1\u6709\u73af\u3002<strong>\u6ce8\u610f\uff1a<code>pos<\/code> \u4e0d\u4f5c\u4e3a\u53c2\u6570\u8fdb\u884c\u4f20\u9012<\/strong>\uff0c\u4ec5\u4ec5\u662f\u4e3a\u4e86\u6807\u8bc6\u94fe\u8868\u7684\u5b9e\u9645\u60c5\u51b5\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p>\u521a\u770b\u5230\u8fd9\u9898\u6211\u7b2c\u4e00\u53cd\u5e94\u89c9\u5f97\u8fd8\u633a\u7b80\u5355\u7684\uff0c\u7b54\u9898\u601d\u8def\u53ef\u80fd\u548c\u4e0a\u4e00\u9898\u5dee\u4e0d\u591a\uff0c\u7136\u540e\u8349\u8349\u5199\u4e86\u4e2a\u66b4\u529b\u505a\u6cd5\uff0c\u867d\u7136\u8bf4\u6ca1\u6709\u8d85\u65f6\u4f46\u6267\u884c\u7528\u65f6\u8d85\u7ea7\u957f\u3002\u7136\u540e\u770b\u4e86\u4e0b\u5361\u5c14\u89c6\u9891\uff0c\u5b66\u5230\u7684\u89e3\u6cd5\u975e\u5e38\u5de7\u5999\uff0c\u6700\u540e\u4e5f\u6210\u529f\u628a\u6267\u884c\u7528\u65f6\u538b\u4e86\u767e\u500d\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u89e3\u6cd5\u4e00\uff1a\u6734\u5b9e\u65e0\u534e\u7684\u66b4\u529b\uff0c\u4f7f\u7528\u4e24\u4e2acur \u6307\u9488\uff0c\u5bf9\u6bcf\u4e00\u4e2a cur1 \u90fd\u7528cur2\u904d\u5386\u94fe\u8868\u8fdb\u884c\u6bd4\u8f83\u8282\u70b9\u662f\u5426\u76f8\u7b49\uff0c\u7531\u4e8e\u662f\u5728\u5355\u4e2a\u94fe\u8868\u4e0a\u8fdb\u884c\u6bd4\u8f83\uff0c\u6240\u4ee5\u4e00\u65e6\u51fa\u73b0\u6709\u8282\u70b9\u76f8\u540c\u90a3\u4e48\u80af\u5b9a\u662f\u6709\u73af\u5b58\u5728\uff0c\u5e76\u4e14\u8fd9\u4e2a\u8282\u70b9\u5c31\u662f\u73af\u8d77\u70b9\u3002<\/li>\n\n\n\n<li>\u89e3\u6cd5\u4e8c\uff1a\u89e3\u6cd5\u4e8c\u5c31\u5f88\u6709\u610f\u601d\u4e86\uff0c\u5361\u5c14\u8001\u5e08\u7684\u89c6\u9891\u5206\u6790\u7684\u975e\u5e38\u900f\u5f7b\uff0c\u7528\u4e00\u4e2a\u7c7b\u4f3c\u64cd\u573a\u8dd1\u6b65\u8ffd\u53ca\u95ee\u9898\u7684\u6a21\u578b\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5b9a\u4e49\u4e00\u5bf9\u5feb\u6162\u6307\u9488\uff0c\u5feb\u6307\u9488\u6bcf\u6b21\u8d70\u4e24\u6b65\uff0c\u6162\u6307\u9488\u6bcf\u6b21\u8d70\u4e00\u6b65\uff0c\u5982\u679c\u4e24\u8005\u5728\u540e\u7eed\u51fa\u73b0\u4e86\u76f8\u9047\uff0c\u90a3\u4e48\u8bf4\u660e\u4e00\u5b9a\u5b58\u5728\u73af\uff0c\u76f8\u9047\u539f\u56e0\u662f\u56e0\u4e3a\u5feb\u6307\u9488\u5957\u4e86\u6162\u6307\u9488\u5708\u3002\u4f46\u662f\uff0c\u5230\u8fd9\u91cc\u8fd8\u6ca1\u6709\u7ed3\u675f\uff0c\u4ee5\u4e0a\u53ea\u8bf4\u660e\u5b58\u5728\u73af\uff0c\u60f3\u8981\u627e\u5230\u73af\u8d77\u70b9\u8fd8\u9700\u8981\u5c06\u6162\u6307\u9488\u91cd\u65b0\u62c9\u56de\u5934\u8282\u70b9\uff0c\u5982\u679c\u5feb\u8282\u70b9\u548c\u6162\u8282\u70b9\u51fa\u73b0\u76f8\u9047\uff0c\u90a3\u4e48\u76f8\u9047\u4f4d\u7f6e\u5c31\u662f\u73af\u8d77\u70b9\uff0c\u5177\u4f53\u539f\u56e0\u8be6\u89c1\u89c6\u9891\u6570\u5b66\u8bc1\u660e\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e00\u5b9e\u73b0\u5199\u6cd5\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>&nbsp;class Solution:\n    def detectCycle(self, head: Optional&#91;ListNode]) -&gt; Optional&#91;ListNode]:\n        cur1 = head\n        index1 = 0\n        \n        while cur1:\n            cur2 = head\n            index2 = 0\n            \n            while cur2 and index2 &lt; index1:  \n                if cur1 == cur2:  # \u5982\u679c\u9047\u5230\u76f8\u540c\u7684\u8282\u70b9\n                    return cur1   # \u8bf4\u660e\u6709\u73af\n                cur2 = cur2.next\n                index2 += 1\n            \n            cur1 = cur1.next\n            index1 += 1\n        \n        return None <\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e8c\u5b9e\u73b0\u5199\u6cd5\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>class Solution:\n    def detectCycle(self, head: Optional&#91;ListNode]) -&gt; Optional&#91;ListNode]:\n        slow = head\n        fast = head\n\n        while fast and fast.next:\n            slow = slow.next\n            fast = fast.next.next\n\n            if slow == fast:\n                slow = head\n                while slow != fast:\n                    slow = slow.next\n                    fast = fast.next\n                return slow\n        return None<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u603b\u7ed3<\/h1>\n\n\n\n<p>\u5230\u8fd9\u91cc\uff0c\u94fe\u8868\u90e8\u5206\u7684\u5b66\u4e60\u5c31\u6682\u65f6\u544a\u4e00\u6bb5\u843d\u4e86\uff0c\u5728\u7b2c\u4e09\u5929\u4e3b\u8981\u662f\u5b66\u4e60\u4e86\u94fe\u8868\u7684\u57fa\u672c\u6982\u5ff5\u548c\u57fa\u672c\u64cd\u4f5c\uff0c\u7b2c\u56db\u5929\u5728\u6b64\u57fa\u7840\u4e0a\u66f4\u52a0\u9700\u8981\u6df1\u5165\u601d\u8003\u5b9e\u9645\u7684\u6267\u884c\u8fc7\u7a0b\uff0c\u6211\u4e2a\u4eba\u89c9\u5f97\u5b8c\u6210\u94fe\u8868\u76f8\u5173\u9898\u76ee\uff08\u4e0d\u53ea\u662f\u94fe\u8868\uff09\u5982\u679c\u501f\u52a9\u753b\u56fe\uff0c\u4f1a\u4f7f\u5f97\u7406\u89e3\u66f4\u52a0\u5bb9\u6613\uff0c\u80fd\u7406\u89e3\u6267\u884c\u8fc7\u7a0b\u540e\u9700\u8981\u505a\u7684\u4e8b\u60c5\u5c31\u662f\u8fd8\u539f\u6267\u884c\u7684\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e00\u90e8\u5206\u514b\u670d\u4e86\u6211\u5148\u524d\u5bf9\u94fe\u8868\u7684\u6050\u60e7\uff0c\u901a\u8fc7\u6dfb\u52a0\u865a\u62df\u5934\u8282\u70b9\u4f7f\u5f97\u89e3\u9898\u65b9\u4fbf\u8bb8\u591a\uff0c\u800c\u5feb\u6162\u6307\u9488\u7684\u601d\u60f3\u5728\u8fd9\u4e00\u90e8\u5206\u7ecf\u5e38\u51fa\u73b0\uff0c\u503c\u5f97\u6df1\u5165\u5206\u6790\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u4eca\u5929\u662f\u7b97\u6cd5\u8bad\u7ec3\u8425\u7684\u7b2c\u56db\u5929\uff0c\u4eca\u5929\u7684\u4e3b\u9898\u4f9d\u65e7\u662f\u94fe\u8868\u4f46\u662f\u9898\u76ee\u96be\u5ea6\u6709\u6240\u4e0a\u5347\uff0c\u7ecf\u8fc7\u51e0\u5929\u7684\u8bad\u7ec3\u540e\uff0c\u660e\u663e\u611f\u89c9\u5230\u73b0\u5728\u5bf9\u4e8e [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[13,15,14],"class_list":["post-393","post","type-post","status-publish","format-standard","hentry","category-python","tag-python","tag-15","tag-14"],"_links":{"self":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts\/393","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/comments?post=393"}],"version-history":[{"count":2,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts\/393\/revisions"}],"predecessor-version":[{"id":395,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts\/393\/revisions\/395"}],"wp:attachment":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/media?parent=393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/categories?post=393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/tags?post=393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}