{"id":79,"date":"2026-05-04T17:45:31","date_gmt":"2026-05-04T09:45:31","guid":{"rendered":"https:\/\/reverier.cn\/?p=79"},"modified":"2026-05-04T18:58:21","modified_gmt":"2026-05-04T10:58:21","slug":"%e5%8a%9b%e6%89%a3%e5%93%88%e5%b8%8c","status":"publish","type":"post","link":"https:\/\/reverier.cn\/index.php\/2026\/05\/04\/%e5%8a%9b%e6%89%a3%e5%93%88%e5%b8%8c\/","title":{"rendered":"\u529b\u6263\u54c8\u5e0c"},"content":{"rendered":"\n

\u4e24\u6570\u4e4b\u548c<\/h1>\n\n\n\n

\u9898\u76ee\u63cf\u8ff0<\/h2>\n\n\n\n

\u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4 nums \u548c\u4e00\u4e2a\u6574\u6570\u76ee\u6807\u503c target\uff0c\u8bf7\u4f60\u5728\u8be5\u6570\u7ec4\u4e2d\u627e\u51fa \u548c\u4e3a\u76ee\u6807\u503c target \u7684\u90a3 \u4e24\u4e2a \u6574\u6570\uff0c\u5e76\u8fd4\u56de\u5b83\u4eec\u7684\u6570\u7ec4\u4e0b\u6807\u3002<\/p>\n\n\n\n

\u4f60\u53ef\u4ee5\u5047\u8bbe\u6bcf\u79cd\u8f93\u5165\u53ea\u4f1a\u5bf9\u5e94\u4e00\u4e2a\u7b54\u6848\uff0c\u5e76\u4e14\u4f60\u4e0d\u80fd\u4f7f\u7528\u4e24\u6b21\u76f8\u540c\u7684\u5143\u7d20\u3002<\/p>\n\n\n\n

\u4f60\u53ef\u4ee5\u6309\u4efb\u610f\u987a\u5e8f\u8fd4\u56de\u7b54\u6848\u3002<\/p>\n\n\n\n

\u89e3\u51b3\u601d\u8def<\/h2>\n\n\n\n

\u7b2c\u4e00\u53cd\u5e94\u662f\u5c06\u6570\u5b57\u4e00\u4e2a\u4e2a\u76f8\u52a0\u518d\u548ctarget\u8fdb\u884c\u6bd4\u8f83<\/p>\n\n\n\n

\u4f46\u662f\u8fd9\u6837\u8017\u65f6\u592a\u591a\uff0c\u6839\u636e\u9898\u76ee\u7684\u7279\u6027\uff0c\u8fd9\u4e2a\u9898\u76ee\u53ea\u6709\u4e00\u7ec4\u89e3\uff0c\u4e5f\u5c31\u662f\u4e00\u904d\u5c31\u53ef\u4ee5\u904d\u5386\u51fa\u7b54\u6848<\/p>\n\n\n\n

\u5148\u5b9a\u4e49\u4e00\u4e2a\u4e2d\u95f4\u6570res\uff0cres=target-num[i]<\/p>\n\n\n\n

\u518d\u5bf9\u5269\u4e0b\u7684\u6570\u5b57\u8fdb\u884c\u904d\u5386\u6bd4\u8f83\u5c31\u53ef\u4ee5\u8fd4\u56de\u7ed3\u679c<\/p>\n\n\n\n

\u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n
class Solution:
    def twoSum(self, nums: List[int], target: int) -> List[int]:
        for i in range(len(nums)):
            res = target-nums[i] 
            if res in nums[i+1:]:
                return [i,nums[i+1:].index(res)+i+1] 
\u200b<\/pre>\n\n\n\n
\u7ec6\u8282\u8bf4\u660e<\/h2>\n\n\n\n
\u8868\u8fbe\u5f0f<\/strong><\/th>\u542b\u4e49<\/strong><\/th><\/tr><\/thead>
nums[i:]<\/code><\/td>\u4ece\u7d22\u5f15 i<\/code> \u5f00\u59cb\uff0c\u5305\u542b i<\/code>\uff0c\u53d6\u5230\u6700\u540e\u3002<\/td><\/tr>
nums[i+1:]<\/code><\/td>\u4ece i<\/code> \u7684\u4e0b\u4e00\u4e2a\u4f4d\u7f6e<\/strong>\u5f00\u59cb\uff0c\u53d6\u5230\u6700\u540e\u3002<\/td><\/tr>
nums[:i]<\/code><\/td>\u4ece\u5f00\u5934\u5f00\u59cb\u53d6\uff0c\u53d6\u5230\u7d22\u5f15 i<\/code> \u4e3a\u6b62\uff08\u4e0d\u5305\u542b<\/strong> i<\/code>\uff09\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
.index()<\/code> \u662f\u5217\u8868\uff08List\uff09\u7684\u4e00\u4e2a\u5185\u7f6e\u65b9\u6cd5<\/strong>\uff0c\u5b83\u7684\u529f\u80fd\u662f\uff1a\u5728\u5217\u8868\u4e2d\u5bfb\u627e\u67d0\u4e2a\u503c\uff0c\u5e76\u8fd4\u56de\u5b83\u7b2c\u4e00\u6b21\u51fa\u73b0\u7684\u4f4d\u7f6e\uff08\u7d22\u5f15\uff09\u3002<\/strong><\/p>\n\n\n\n
\u57fa\u672c\u8bed\u6cd5\uff1a<\/p>\n\n\n\n
\u5217\u8868.index(\u8981\u67e5\u627e\u7684\u503c, \u8d77\u59cb\u4f4d\u7f6e, \u7ed3\u675f\u4f4d\u7f6e)<\/p>\n\n\n\n
nums[i+1:].index(res)+i+1<\/strong><\/p>\n\n\n\n
\u56e0\u4e3anums[i+1] \u4f1a\u5148\u5207\u51fa\u4e00\u4e2a\u65b0\u5217\u8868\uff08\u5254\u9664\u4e86\u5f53\u524d\u5143\u7d20\u53ca\u5176\u4e4b\u524d\u7684\u5143\u7d20\uff09\u3002<\/p>\n\n\n\n
\u8fd4\u56de\u7684\u7d22\u5f15\u662f\u65b0\u5217\u8868\u7684\u7d22\u5f15\uff0c\u6240\u4ee5\u6211\u4eec\u8981\u52a0\u4e0a\u539f\u6765\u7684\u957f\u5ea6\uff0ci \u4ece0\u5f00\u59cb\u53d6\u6240\u4ee5\u8981\u52a01<\/p>\n\n\n\n
\u5b57\u6bcd\u5f02\u4f4d\u8bcd\u5206\u7ec4<\/h1>\n\n\n\n
\u9898\u76ee\u63cf\u8ff0<\/h2>\n\n\n\n
\u7ed9\u4f60\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u8bf7\u4f60\u5c06 \u5b57\u6bcd\u5f02\u4f4d\u8bcd \u7ec4\u5408\u5728\u4e00\u8d77\u3002\u53ef\u4ee5\u6309\u4efb\u610f\u987a\u5e8f\u8fd4\u56de\u7ed3\u679c\u5217\u8868\u3002<\/p>\n\n\n\n
\u793a\u4f8b 1:<\/strong><\/p>\n\n\n\n
\u8f93\u5165:<\/strong> strs = [\"eat\", \"tea\", \"tan\", \"ate\", \"nat\", \"bat\"]<\/p>\n\n\n\n
\u8f93\u51fa:<\/strong> [[\"bat\"],[\"nat\",\"tan\"],[\"ate\",\"eat\",\"tea\"]]<\/p>\n\n\n\n
\u89e3\u91ca\uff1a<\/strong><\/p>\n\n\n\n
    \n
  • \u5728 strs \u4e2d\u6ca1\u6709\u5b57\u7b26\u4e32\u53ef\u4ee5\u901a\u8fc7\u91cd\u65b0\u6392\u5217\u6765\u5f62\u6210 \"bat\"<\/code>\u3002<\/li>\n\n\n\n
  • \u5b57\u7b26\u4e32 \"nat\"<\/code> \u548c \"tan\"<\/code> \u662f\u5b57\u6bcd\u5f02\u4f4d\u8bcd\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u91cd\u65b0\u6392\u5217\u4ee5\u5f62\u6210\u5f7c\u6b64\u3002<\/li>\n\n\n\n
  • \u5b57\u7b26\u4e32 \"ate\"<\/code> \uff0c\"eat\"<\/code> \u548c \"tea\"<\/code> \u662f\u5b57\u6bcd\u5f02\u4f4d\u8bcd\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u91cd\u65b0\u6392\u5217\u4ee5\u5f62\u6210\u5f7c\u6b64\u3002<\/li>\n<\/ul>\n\n\n\n
    \u89e3\u51b3\u601d\u8def<\/h2>\n\n\n\n
    \u5206\u7ec4\u7684\u4f9d\u636e\u662f\u5355\u8bcd\u7684\u7ec4\u6210\u5b57\u6bcd\u80fd\u7ec4\u6210\u540c\u4e00\u4e2a\u5355\u8bcd\uff0c\u90a3\u4e48\u5c06\u5355\u8bcd\u7684\u5b57\u6bcd\u6309\u7167\u76f8\u540c\u7684\u89c4\u5f8b\u8fdb\u884c\u6392\u5e8f\u90a3\u4e48\u7ec4\u6210\u7684\u5355\u8bcd\u4efb\u7136\u662f\u4e00\u6837\u7684<\/p>\n\n\n\n
    \u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n
    class Solution:
        def groupAnagrams(self, strs: List[str]) -> List[List[str]]:
            table={}
            for s in strs:
                s_ = \"\".join(sorted(s))
                if s_ not in table:
                    table[s_] = [s]
                else:
                    table[s_].append(s)
            return list(table.values())<\/pre>\n\n\n\n
    \u7ec6\u8282\u8bf4\u660e<\/h2>\n\n\n\n
    s_ = \"\".join(sorted(s))<\/p>\n\n\n\n
    \u62c6\u5f00\u6765\u5199<\/p>\n\n\n\n
    char_list = sorted(s)      # \u5148\u6392\u5e8f\uff0c\u5f97\u5230\u5217\u8868 ['a', 'e', 't']
    s_ = \"\".join(char_list)    # \u518d\u62fc\u5408\uff0c\u5f97\u5230\u5b57\u7b26\u4e32 \"aet\"<\/pre>\n\n\n\n
    sorted(s)<\/code> \u2014\u2014 \u62c6\u89e3\u4e0e\u6392\u5e8f<\/strong><\/p>\n\n\n\n
    sorted()<\/code> \u662f Python \u7684\u5185\u7f6e\u51fd\u6570\uff0c\u5b83\u53ef\u4ee5\u63a5\u53d7\u4efb\u4f55\u5e8f\u5217\u3002\u5f53\u4f60\u628a\u5b57\u7b26\u4e32\u4f20\u7ed9\u5b83\u65f6\uff1a<\/p>\n\n\n\n
      \n
    • \u5b83\u4f1a\u628a\u5b57\u7b26\u4e32\u62c6\u6210\u4e00\u4e2a\u4e2a\u5b57\u7b26<\/strong>\u3002<\/li>\n\n\n\n
    • \u6309\u7167 Unicode \u7f16\u7801\u987a\u5e8f<\/strong>\uff08\u901a\u5e38\u5c31\u662f\u5b57\u6bcd\u8868\u987a\u5e8f\uff09\u8fdb\u884c\u5347\u5e8f\u6392\u5217\u3002<\/li>\n\n\n\n
    • \u5173\u952e\u70b9<\/strong>\uff1a\u5b83\u8fd4\u56de\u7684\u662f\u4e00\u4e2a \u5217\u8868\uff08List\uff09<\/strong>\uff0c\u800c\u4e0d\u662f\u5b57\u7b26\u4e32\u3002<\/li>\n<\/ul>\n\n\n\n
      \"\".join(...)<\/code> \u2014\u2014 \u7f1d\u5408<\/strong><\/p>\n\n\n\n
      join()<\/code> \u662f\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u3002\u5b83\u7684\u4f5c\u7528\u662f\u628a\u4e00\u4e2a\u5217\u8868\u91cc\u7684\u6240\u6709\u5143\u7d20\u201c\u7c98\u201d\u5728\u4e00\u8d77\uff0c\u53d8\u6210\u4e00\u4e2a\u957f\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
      \u8bed\u6cd5\u662f\uff1a\"\u8fde\u63a5\u7b26\".join(\u5217\u8868)<\/code><\/p>\n\n\n\n
        \n
      • \u8fd9\u91cc\u7684\u8fde\u63a5\u7b26\u662f \"\"<\/code>\uff08\u7a7a\u5b57\u7b26\u4e32\uff09\uff0c\u610f\u5473\u7740\u5b57\u7b26\u4e4b\u95f4\u4e0d\u63d2\u5165\u4efb\u4f55\u4e1c\u897f<\/strong>\uff0c\u76f4\u63a5\u5934\u5c3e\u76f8\u63a5\u3002<\/li>\n<\/ul>\n\n\n\n
        if s_ not in table:
            table[s_] = [s]   # \u5982\u679c\u662f\u7b2c\u4e00\u6b21\u89c1\u8fd9\u4e2a\u7ec4\u5408\uff0c\u5f00\u8f9f\u4e00\u4e2a\u65b0\u7684\u5206\u7c7b\u5217\u8868
        else:
            table[s_].append(s) # \u5982\u679c\u5df2\u7ecf\u6709\u4e86\uff0c\u76f4\u63a5\u628a\u539f\u59cb\u5b57\u7b26\u4e32 s \u585e\u8fdb\u53bb<\/pre>\n\n\n\n
        \u6700\u957f\u8fde\u7eed\u5e8f\u5217<\/h1>\n\n\n\n
        \u9898\u76ee\u63cf\u8ff0<\/h2>\n\n\n\n
        \u7ed9\u5b9a\u4e00\u4e2a\u672a\u6392\u5e8f\u7684\u6574\u6570\u6570\u7ec4 nums<\/code> \uff0c\u627e\u51fa\u6570\u5b57\u8fde\u7eed\u7684\u6700\u957f\u5e8f\u5217\uff08\u4e0d\u8981\u6c42\u5e8f\u5217\u5143\u7d20\u5728\u539f\u6570\u7ec4\u4e2d\u8fde\u7eed\uff09\u7684\u957f\u5ea6\u3002<\/p>\n\n\n\n
        \u8bf7\u4f60\u8bbe\u8ba1\u5e76\u5b9e\u73b0\u65f6\u95f4\u590d\u6742\u5ea6\u4e3a O(n)<\/code> \u7684\u7b97\u6cd5\u89e3\u51b3\u6b64\u95ee\u9898\u3002<\/p>\n\n\n\n
        \u89e3\u51b3\u601d\u8def<\/h2>\n\n\n\n
        \u5bf9\u4e8e nums \u4e2d\u7684\u5143\u7d20 x\uff0c\u4ee5 x \u4e3a\u8d77\u70b9\uff0c\u4e0d\u65ad\u67e5\u627e\u4e0b\u4e00\u4e2a\u6570 x+1,x+2,\u22ef \u662f\u5426\u5728 nums \u4e2d\uff0c\u5e76\u7edf\u8ba1\u5e8f\u5217\u7684\u957f\u5ea6\u3002<\/p>\n\n\n\n
        \u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n
        class Solution:
            def longestConsecutive(self, nums: List[int]) -> int:
                st = set(nums)    #\u628anums\u8f6c\u5316\u4e3a\u54c8\u5e0c\u96c6\u5408
                m = len (st)
                ans=0
                for x in st:
                    if x-1 in st:
                        continue
                    y=x+1
                    while y in st:
                        y += 1
                    ans = max(ans,y-x)
                    if ans * 2 >=m :
                        break
                return ans<\/pre>\n\n\n\n
        \u7ec6\u8282\u8bf4\u660e<\/h2>\n\n\n\n
        if x-1 in st:<\/strong><\/p>\n\n\n\n
        \u5f53\u6709\u4e00\u4e2a\u6570\u6bd4x\u5c0f\u65f6\uff0c\u90a3\u4e48x\u5c31\u4e0d\u80fd\u662f\u8fd9\u6761\u94fe\u7684\u5f00\u5934\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u8df3\u8fc7\u8fd9\u4e2a\u6570\u7684\u5faa\u73af\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5927\u91cf\u7684\u91cd\u590d\u8ba1\u7b97<\/p>\n\n\n\n
        \u5982\u679c\u6ca1\u6709\u6570\u5b57\u6bd4x\u5c0f\uff0cy\u5c31\u4e00\u76f4\u52a0\u4e0b\u53bb\uff0c\u76f4\u5230\u8fd9\u4e2a\u8868\u65ad\u6389\uff0c\u8ba1\u7b97\u957f\u5ea6\u5c31\u662fy-x<\/p>\n\n\n\n
        if ans * 2 >=m :<\/strong><\/p>\n\n\n\n
        \u5982\u679c\u8fd9\u4e2a\u94fe\u7684\u957f\u5ea6\u5927\u4e8e\u539f\u6765\u94fe\u957f\u5ea6\u7684\u4e8c\u5206\u4e4b\u4e00\uff0c\u5c31\u8bf4\u660e\u6ca1\u6709\u4efb\u4f55\u4e00\u4e2a\u94fe\u4f1a\u8d85\u8fc7\u5b83\uff0c\u5b83\u5c31\u662f\u6700\u957f\u7684<\/p>\n\n\n\n
        \u5982\u679c\u8fd9\u91cc\u5148\u8fdb\u884c\u5347\u5e8f\u6392\u5217\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u5c31\u8d85\u8fc7\u4e86<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u4e24\u6570\u4e4b\u548c \u9898\u76ee\u63cf\u8ff0 \u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4 nums \u548c\u4e00\u4e2a\u6574\u6570\u76ee\u6807\u503c target\uff0c\u8bf7\u4f60\u5728\u8be5\u6570\u7ec4\u4e2d\u627e\u51fa \u548c\u4e3a\u76ee\u6807\u503c target \u7684\u90a3 …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[7,8],"tags":[],"class_list":["post-79","post","type-post","status-publish","format-standard","hentry","category-7","category-8"],"_links":{"self":[{"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/posts\/79","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/comments?post=79"}],"version-history":[{"count":1,"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/posts\/79\/revisions"}],"predecessor-version":[{"id":80,"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/posts\/79\/revisions\/80"}],"wp:attachment":[{"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/media?parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/categories?post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/reverier.cn\/index.php\/wp-json\/wp\/v2\/tags?post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}