\u4e3a\u4e86\u5174\u8da3\uff0c\u4e5f\u4e3a\u4e86\u4fdd\u6301coding\u7684\u80fd\u529b\uff0c\u91cd\u65b0\u5f00\u59cb\u5199\u4e00\u4e9b\u7b97\u6cd5\u9898\uff1b\u4e3a\u4e86\u5bf9\u7b97\u6cd5\u4e86\u89e3\u7684\u66f4\u900f\u5f7b\uff0c\u4e5f\u4e3a\u4e86\u953b\u70bc\u8868\u8fbe\u80fd\u529b\uff0c\u5e72\u8106\u5728\u535a\u5ba2\u91cc\u9762\u5bf9\u89e3\u9898\u4ee3\u7801\u8fdb\u884c\u8be6\u89e3\uff0c\u4ee3\u7801\u662f\u81ea\u5df1\u5199\u7684\uff0c\u4f46\u4e5f\u4e0d\u6392\u9664\u53c2\u8003\u4e86\u522b\u4eba\u7684\u89e3\u6cd5\uff0c\u6d88\u5316\u5438\u6536\u4e86\u5c31\u662f\u81ea\u5df1\u7684\uff0c\u4e0d\u662f\u5417\uff1f<\/p>\n
\u592a\u957f\u4e86\uff0c\u5c31\u4e0d\u8d34\u4e86\uff0c\u94fe\u63a5\u5728\u6b64<\/a><\/p>\n \u4e3a\u4e86\u5174\u8da3\uff0c\u4e5f\u4e3a\u4e86\u4fdd\u6301coding\u7684\u80fd\u529b\uff0c\u91cd\u65b0\u5f00\u59cb\u5199\u4e00\u4e9b\u7b97\u6cd5\u9898\uff1b\u4e3a\u4e86\u5bf9\u7b97\u6cd5\u4e86\u89e3\u7684\u66f4\u900f\u5f7b\uff0c\u4e5f\u4e3a\u4e86\u953b\u70bc\u8868\u8fbe\u80fd\u529b\uff0c\u5e72\u8106\u5728\u535a\u5ba2\u91cc\u9762\u5bf9\u89e3\u9898\u4ee3\u7801\u8fdb\u884c\u8be6\u89e3\uff0c\u4ee3\u7801\u662f\u81ea\u5df1\u5199\u7684\uff0c\u4f46\u4e5f\u4e0d\u6392\u9664\u53c2\u8003\u4e86\u522b\u4eba\u7684\u89e3\u6cd5\uff0c\u6d88\u5316\u5438\u6536\u4e86\u5c31\u662f\u81ea\u5df1\u7684\uff0c\u4e0d\u662f\u5417\uff1f \u9898\u9762\uff1a \u592a\u957f\u4e86\uff0c\u5c31\u4e0d\u8d34\u4e86\uff0c\u94fe\u63a5\u5728\u6b64 \u4ee3\u7801\u53ca\u8be6\u89e3\uff1a class ZooExchangeProgram: def getNumber(self, label, lower, upper): l = list(label) # \u8fd9\u4e2ar\u5c31\u662f\u6211\u4eec\u6700\u540e\u8981\u901a\u8fc7\u5404\u79cd\u73b0\u6709label\u7ec4\u7684\u5408\u5e76\u8fbe\u5230\u7684\u76ee\u6807\u96c6\u5408 r = range(lower, upper+1) # \u7b80\u5355\u7684\u5c06\u65e0\u89e3\u7684\u60c5\u51b5\u6392\u9664 for i in r: if i not in l: return -1 # \u6309\u7167\u7ed9\u5b9a\u7684\u76ee\u6807\u96c6\u5408\uff0c\u5c06\u6240\u6709\u5728\u5305\u542b\u4e8e\u76ee\u6807\u96c6\u5408\u7684label\u7ec4\u90fd\u6574\u7406\u51fa\u6765 groups = [] start = 0 for i,x in enumerate(l): if x not in r: if start < i: groups.append(set(l[start:i])) … Continue reading “topcoder practice: ZooExchangeProgram”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[2],"tags":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p7Dhki-1W","jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts\/120"}],"collection":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=120"}],"version-history":[{"count":5,"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts\/120\/revisions"}],"predecessor-version":[{"id":125,"href":"http:\/\/www.luo666.com\/index.php?rest_route=\/wp\/v2\/posts\/120\/revisions\/125"}],"wp:attachment":[{"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=120"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.luo666.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u4ee3\u7801\u53ca\u8be6\u89e3\uff1a<\/h3>\n
class ZooExchangeProgram:\n def getNumber(self, label, lower, upper):\n l = list(label)\n # \u8fd9\u4e2ar\u5c31\u662f\u6211\u4eec\u6700\u540e\u8981\u901a\u8fc7\u5404\u79cd\u73b0\u6709label\u7ec4\u7684\u5408\u5e76\u8fbe\u5230\u7684\u76ee\u6807\u96c6\u5408\n r = range(lower, upper+1)\n\n # \u7b80\u5355\u7684\u5c06\u65e0\u89e3\u7684\u60c5\u51b5\u6392\u9664\n for i in r:\n if i not in l:\n return -1\n\n # \u6309\u7167\u7ed9\u5b9a\u7684\u76ee\u6807\u96c6\u5408\uff0c\u5c06\u6240\u6709\u5728\u5305\u542b\u4e8e\u76ee\u6807\u96c6\u5408\u7684label\u7ec4\u90fd\u6574\u7406\u51fa\u6765\n groups = []\n start = 0\n for i,x in enumerate(l):\n if x not in r:\n if start < i:\n groups.append(set(l[start:i]))\n start = i + 1\n elif i == len(l) - 1:\n groups.append(set(l[start:i+1]))\n\n # \u53bb\u9664\u91cd\u590d\u7684\u7ec4\uff0c\u56e0\u4e3a\u6211\u4eec\u6700\u7ec8\u6c42\u89e3\u7684\u662f\u8fbe\u6210\u76ee\u6807\u96c6\u5408\u6240\u9700\u8981\u6700\u5c0f\u7684\u7ec4\u6570\u91cf\uff0c\u7b54\u6848\u4e0d\u7528\u7ed9\u51fa\u5305\u542b\u5177\u4f53\u67d0\u4e2a\u7ec4\u7684\u4fe1\u606f\uff0c\u6240\u4ee5\u53bb\u91cd\u4e0d\u5f71\u54cd\u7ed3\u679c\uff0c\u53ea\u4f1a\u52a0\u901f\u6c42\u89e3\uff1b\u8fd9\u4e00\u6bb5\u4ee3\u7801\u4f53\u73b0\u4e86python\u7684\u7b80\u6d01\uff0c\u4e00\u4e2ain\u5173\u952e\u5b57\u5c31\u53ef\u4ee5\u4ee3\u66ffC\u8bed\u8a00\u7684compare\u51fd\u6570\uff0c\u867d\u7136\u80cc\u540e\u7684\u6548\u7387\u80af\u5b9a\u6bd4C\u4f4e\uff0c\u4f46\u662f\u8fd9\u5bf9\u8ba9\u7a0b\u5e8f\u5458\u5173\u6ce8\u7b97\u6cd5\u672c\u8eab\u63d0\u4f9b\u4e86\u6781\u5927\u4fbf\u5229\u3002\u5f53\u7136\u8fd8\u6709\u5176\u5b83\u66f4\u52a0\u9ad8\u6548\u7684list of lists\u53bb\u91cd\u65b9\u6cd5\uff0c\u6bd4\u5982\u4f7f\u7528\u5e93itertools\uff0c\u4f46\u662f\u672c\u9898\u7684\u9650\u5236\u4e86label\u7684\u6570\u91cf\u4e3a50\u4e2a\u4e4b\u5185\uff0c\u6240\u4ee5\u6700\u591a\u670950\u4e2a\u7ec4\uff0c\u53cc\u91cd\u5faa\u73af\u4e00\u6b21\u4e5f\u8fd8\u80fd\u63a5\u53d7\u3002\n ng = []\n for i in groups:\n if i not in ng:\n ng.append(i)\n\n # tricky part: \u8fd9\u91cc\u5f00\u59cb\u624d\u662f\u672c\u9898\u7684\u7cbe\u9ad3\uff0c\u4f7f\u7528\u7684\u662f\u52a8\u6001\u89c4\u5212\uff1b\u72b6\u6001\u5b9a\u4e49\u4e3a\u67d0\u4e2a\u7ec4\u6240\u8986\u76d6\u7684\u5143\u7d20\u96c6\u5408\uff0c\u6216\u8005\u591a\u4e2a\u7ec4\u7684\u5e76\u96c6\u6240\u8986\u76d6\u7684\u5143\u7d20\u96c6\u5408\uff0c\u6700\u7ec8\u72b6\u6001\u5c31\u662f\u76ee\u6807\u96c6\u5408\uff0c\u800c\u6bcf\u4e2a\u7ec4\uff0c\u6216\u8005\u6bcf\u79cd\u591a\u7ec4\u7684\u5e76\u96c6\u6240\u6784\u6210\u7684\u6240\u6709\u72b6\u6001\u90fd\u662f\u4e2d\u95f4\u72b6\u6001\uff1b\u800c\u4e14\uff0c\u8fbe\u6210\u540c\u4e00\u79cd\u72b6\u6001\u53ef\u80fd\u6709\u591a\u79cd\u7ec4\u5408\u5f62\u5f0f\uff1b\u66b4\u529b\u6c42\u89e3\u65b9\u6cd5\u5c31\u662f\u641c\u7d22\u8ba1\u7b97\u6240\u6709\u8fd9\u4e9b\u7ec4\u6784\u6210\u7684\u5168\u90e8\u7ec4\u5408\u5f62\u5f0f\uff0c\u5c06\u5176\u4e2d\u6784\u6210\u6700\u7ec8\u72b6\u6001\u7684\u7ec4\u5408\u8bb0\u5f55\u4e0b\u6765\uff0c\u7136\u540e\u4ece\u4e2d\u627e\u5230\u7531\u6700\u5c11\u7ec4\u6784\u6210\u7684\u7ec4\u5408\uff1b\u8fd9\u79cd\u65b9\u6cd5\u6240\u9700\u8ba1\u7b97\u91cf\u975e\u5e38\u5927\uff0c\u56e0\u4e3a\u5176\u641c\u7d22\u8fc7\u7a0b\u4e2d\u653e\u5f03\u4e86\u5f88\u591a\u4e2d\u95f4\u7ed3\u679c\uff0c\u4e3a\u4e86\u641c\u7d22\u5230\u4e00\u7ec4\u53ef\u80fd\u89e3\uff0c\u8fc7\u7a0b\u4e2d\u8d70\u8fc7\u7684\u5f2f\u8def\uff0c\u5728\u4e0b\u4e00\u7ec4\u6c42\u89e3\u4e2d\u53ef\u80fd\u4ecd\u7136\u8981\u91cd\u65b0\u8d70\u4e00\u904d\uff0c\u8fd9\u662f\u6781\u5927\u7684\u6d6a\u8d39\uff1b\u52a8\u6001\u89c4\u5212\u601d\u60f3\u8bb0\u5f55\u4e0b\u641c\u7d22\u8fc7\u7a0b\u4e2d\u7684\u4efb\u4f55\u4e00\u6b21\u5c1d\u8bd5\u7ed3\u679c\u3002\u672c\u9898\u4e2d\uff0c\u6211\u4eec\u8981\u7eaa\u5f55\u7684\u5c31\u662f\u6bcf\u6b21\u641c\u7d22\u5230\u67d0\u4e2a\u4e2d\u95f4\u72b6\u6001\u65f6\u6240\u9700\u8981\u7684\u7ec4\u5408\u6570\uff0c\u4e0b\u6b21\u518d\u7ec4\u5408\u51fa\u8fd9\u79cd\u72b6\u6001\u65f6\uff0c\u6bd4\u8f83\u4ee5\u524d\u8bb0\u5f55\u4e0b\u6765\u7684\u503c\uff0c\u5982\u679c\u672c\u6b21\u7ec4\u5408\u6570\u66f4\u5c0f\u5219\u66f4\u65b0\u8bb0\u5f55\uff1b\u8fd9\u6837\uff0c\u53ea\u9700\u904d\u5386\u4e00\u6b21\u6240\u6709\u7ec4\u5408\uff0c\u5c31\u80fd\u5f97\u5230\u6240\u6709\u53ef\u80fd\u7684\u4e2d\u95f4\u72b6\u6001\u7684\u6700\u5c0f\u7ec4\u5408\u6570\uff0c\u5c4a\u65f6\u53ea\u9700\u8981\u4ece\u4e2d\u9009\u62e9\u90a3\u4e2a\u6700\u7ec8\u72b6\u6001\u5bf9\u5e94\u7684\u7ec4\u5408\u6570\u5373\u53ef\u3002\n count = [0] * 50\n state = {0:0}\n mode = []\n mask = 0\n ret = 0\n\n # \u8fd9\u91cc\u662f\u4e3a\u4e86\u4f18\u5316\u7a0b\u5e8f\u7684\u6267\u884c\u65f6\u95f4\uff0c\u9700\u8981\u5c06\u90a3\u4e9b\u5fc5\u987b\u9009\u5165\u7ec4\u5408\u7684\u7ec4\u6392\u9664\u51fa\u6211\u4eec\u641c\u7d22\u7684\u8303\u56f4\uff0c\u53cd\u6b63\u65e0\u8bba\u5982\u4f55\u5b83\u4eec\u90fd\u5f97\u5165\u9009\uff0c\u6211\u4eec\u5e72\u561b\u8fd8\u8981\u53bb\u8003\u8651\u5b83\u4eec\u5462\uff0c\u535a\u4e3b\u4e00\u5f00\u59cb\u5c31\u662f\u6ca1\u6709\u6392\u9664\u5b83\u4eec\uff0c\u5728\u63d0\u4ea4\u540e\u88ab\u5224\u5931\u8d25\uff0c\u81ea\u5df1\u6d4b\u8bd5\u53d1\u73b0\u5176\u4e2d\u4e00\u4e2acase\u5c45\u7136\u8017\u8d39\u4e8612s\u4e4b\u591a\u3002\u54ea\u4e9b\u662f\u5fc5\u9009\u7684\u5462\uff0c\u5c31\u662f\u90a3\u4e9b\u5305\u542b\u4e86\u522b\u4eba\u90fd\u6ca1\u6709\u7684\u5143\u7d20\u7684\u7ec4\uff0c\u5230\u8fd9\u91cc\u6211\u4eec\u6240\u8bf4\u7684\u7ec4\u90fd\u662f\u5305\u542b\u4e8e\u76ee\u6807\u96c6\u5408\u7684\uff0c\u6240\u4ee5\u6709\u72ec\u4e00\u65e0\u4e8c\u7684\u5143\u7d20\u7684\u7ec4\u5fc5\u987b\u5165\u9009\u3002\n # \u5148\u8ba1\u7b97\u6240\u6709\u76ee\u6807\u96c6\u5408\u4e2d\u7684\u5143\u7d20\u54ea\u4e9b\u662f\u53ea\u5b58\u5728\u4e8e\u4e00\u4e2a\u7ec4\u4e2d\u7684\n for i in ng:\n for j in i:\n count[j] += 1\n # \u5bf9\u72ec\u4e00\u65e0\u4e8c\u7684\u5143\u7d20\uff0c\u6211\u4eec\u5355\u72ec\u5904\u7406\uff0c\u628a\u5b83\u4eec\u6392\u9664\u5728\u641c\u7d22\u8303\u56f4\uff08\u641c\u7d22\u8303\u56f4\u7684\u7ec4\u6784\u6210mode\uff09\u5185\uff0c\u7136\u540e\u5c06\u5b83\u4eec\u6240\u5728\u7684\u7ec4\u7684\u5e76\u96c6mask\u8bb0\u5f55\u4e0b\u6765\uff1b\u5176\u5b83\u7684\u7ec4\u8ba1\u7b97\u51fa\u5b83\u4eec\u7684\u72b6\u6001\u503c\u4f5c\u4e3akey\u4fdd\u5b58\u5728\u5b57\u5178state\u91cc\u9762\uff0c\u5bf9\u5e94\u7684value\u8bb0\u4e3a1\uff0c\u5373\u8fd9\u79cd\u72b6\u6001\u663e\u7136\u53ea\u9700\u8981\u5bf9\u5e94\u7684\u5355\u4e2a\u7ec4\u81ea\u5df1\u5c31\u80fd\u6784\u6210\u3002\n # \u4e4b\u6240\u4ee5\u7528\u5b57\u5178\uff0c\u800c\u4e0d\u7528list\uff0c\u56e0\u4e3alist\u7684\u7d22\u5f15\u5fc5\u987b\u662f\u8fde\u7eed\u7684\uff0c\u5373\u4f7f\u4e2d\u95f4\u5f88\u591aitem\u90fd\u6ca1\u6709\u7528\u5230\uff0c\u4e5f\u8981\u4e3a\u4ed6\u4eec\u5206\u914d\u5185\u5b58\uff0c\u8fd9\u6837\u7684\u8bdd\u4f1a\u6d6a\u8d39\u5927\u91cf\u7684\u5185\u5b58\uff0c\u6bd4\u5982\u6211\u4eec\u8fd9\u9898\u5f53\u4e2d\u7684label\u6700\u5927\u53ef\u4ee5\u523050\uff0c\u4e5f\u5c31\u662f\u8bf4\u4ece1\u523050\uff0c\u8fd950\u4e2alabel\u4f1a\u67091<<50\u79cd\u53ef\u80fd\u7684\u72b6\u6001\u7ec4\u5408\uff0c\u90a3\u6211\u4eec\u9700\u8981\u4e00\u4e2a1<<50\uff0c\u53731*2^50\uff0c\u5373\u4f7f\u7528\u6700\u5c0f\u7684byte\u578b\u6570\u7ec4\uff08python\u597d\u50cf\u4e0d\u80fd\u6307\u5b9a\u7c7b\u578b\uff09\uff0c\u90a3\u4e5f\u662f1024TB\u7684\u5185\u5b58\uff0c\u535a\u4e3b\u5f00\u59cb\u4e5f\u6ca1\u6709\u610f\u8bc6\u5230\u8fd9\u4e2a\u95ee\u9898\uff0c\u76f4\u63a5\u7528\u4e86list\uff0c\u5728\u6d4b\u8bd5\u8fc7\u7a0b\u4e2dpython\u62a5memory error\u624d\u604d\u7136\u53d1\u73b0\u4e86\u8fd9\u4e48\u4e2a\u5927bug\u3002\u800cpython\u63d0\u4f9b\u4e86\u5b57\u5178\u8fd9\u4e48\u597d\u7684\u4e00\u4e2a\u6570\u636e\u7ed3\u6784\uff0c\u4f7f\u7528\u5b57\u5178\u53ef\u4ee5\u505a\u5230\u7528\u591a\u5c11\u7ed9\u591a\u5c11\uff0c\u5927\u5927\u5927\u7684\u51cf\u5c11\u4e86\u5185\u5b58\u6d6a\u8d39\u3002\n for i in ng:\n temp = 0\n only = False\n for j in i:\n if count[j] == 1:\n only = True\n temp += 1<<(j-1)\n if not only:\n mode.append(temp)\n state[temp] = 1\n else:\n mask |= temp\n ret += 1\n\n if mask == (1<<upper)-(1<<(lower-1)):\n return ret\n\n best = 50 # \u4e0d\u4f1a\u6bd450\u4e2a\u7ec4\u7684\u7ec4\u5408\u66f4\u5dee\u7684\u60c5\u51b5\u4e86\n for m in mode:\n for i in state.keys():\n # \u65b0\u7684\u72b6\u6001\u53ef\u7531\u8001\u72b6\u6001\u548cm\u7ec4\u6210\uff0c\u4f46\u672a\u5fc5\u6bd4\u5386\u53f2\u8bb0\u5f55\u66f4\u4f18\n state[i|m] = min(state.get(i|m,50), state.get(i,50)+1)\n if mask|i|m == (1<<upper)-(1<<(lower-1)):\n best = min(best, ret+state[i|m])\n\n return best\n<\/pre>\n","protected":false},"excerpt":{"rendered":"