{"id":72,"date":"2012-02-23T17:23:49","date_gmt":"2012-02-23T09:23:49","guid":{"rendered":"http:\/\/www.freezhongzi.info\/?p=72"},"modified":"2019-09-29T10:02:50","modified_gmt":"2019-09-29T02:02:50","slug":"%e9%9d%92%e8%9b%99%e8%bf%87%e6%b2%b3%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/bl4kraven.com\/index.php\/2012\/02\/23\/%e9%9d%92%e8%9b%99%e8%bf%87%e6%b2%b3%e9%97%ae%e9%a2%98\/","title":{"rendered":"\u9752\u86d9\u8fc7\u6cb3\u95ee\u9898"},"content":{"rendered":"

<\/center>\u6211\u5f88\u65e9\u5c31\u770b\u5230\u8fd9\u4e2a\u95ee\u9898\uff08\u6700\u65e9\u662f\u5728\u4e00\u6b3e\u7ecf\u5178\u7684\u89e3\u5bc6\u7c7b\u6e38\u620f\u91cc\uff09\uff0c\u73a9\u6cd5\u5f88\u7b80\u5355\uff1a\u6bcf\u53ea\u9752\u86d9\u90fd\u53ef\u4ee5\u5411\u524d\u6216\u8005\u8d8a\u8fc7\u524d\u9762\u7684\u9752\u86d9\u8df3\u4e00\u683c\uff08\u8ddf\u5c0f\u65f6\u5019\u7684\u516d\u89d2\u73bb\u7483\u5f39\u5b50\u68cb\u5f88\u50cf:)\uff09\uff0c\u76f4\u5230\u5168\u90e8\u8df3\u5230\u5bf9\u9762\u3002<\/p>\n

\u5177\u4f53\u7684\u7f16\u7a0b\u5c31\u662f\u7b80\u5355\u7684\u7a77\u4e3e\u6cd5\u4e86\uff0c\u56e0\u4e3a\u5de6\u53f3\u5bf9\u79f0\uff0c\u6240\u4ee5\u6709\u4e24\u79cd\u89e3\u6cd5\u3002\u76f4\u63a5\u4e0a\u4e2aPython\u4ee3\u7801\uff1a<\/p>\n

Python\u8bed\u8a00<\/u>: \u9752\u86d9\u8fc7\u6cb3<\/a><\/div>\n
#!\/usr\/bin\/env python<\/span>
\n# -*- coding:UTF-8 -*-<\/span>
\n# \u8ba1\u7b97\u9752\u86d9\u8df3\u77f3\u5934\u8fc7\u6cb3\u95ee\u9898\uff1a<\/span>
\n# \u6bcf\u53ea\u9752\u86d9\u53ef\u4ee5\u5411\u524d\u8df3\u4e00\u6b65\u5230\u7a7a\u7684\u77f3\u5934\u6216\u8d8a\u8fc7\u524d\u9762\u7684\u4e00\u53ea\u9752\u86d9\u8df3\u5230\u77f3\u5934<\/span>
\n# \u521d\u59cb\u72b6\u6001\uff1a>>>+<<< <\/span>
\n# \u6700\u7ec8\u72b6\u6001\uff1a<<<+>>> <\/span>
\n# +\u4e3a\u7a7a\u77f3\u5934\uff0c>\u548c<\u4e3a\u65b9\u5411\u76f8\u53cd\u7684\u9752\u86d9<\/span>   <\/p>\n

trace_stack<\/span> =<\/span> []<\/span><\/p>\n

def<\/span> recursive<\/span>(frog_list<\/span>,<\/span> final_list<\/span>):<\/span>
\n    global<\/span> trace_stack<\/span><\/p>\n

    if<\/span> frog_list<\/span> ==<\/span> final_list<\/span>:<\/span>
\n        trace_stack<\/span>.<\/span>append<\/span>(frog_list<\/span>)
\n        return<\/span> True<\/span><\/p>\n

    index<\/span> =<\/span> frog_list<\/span>.<\/span>index<\/span>(‘+’<\/span>)<\/p>\n

    # \u7a7a\u77f3\u5934\u53f3\u8fb9\u7b2c\u4e00\u53ea<\/span>
\n    if<\/span> index<\/span>+<\/span>1<\/span> <<\/span> len<\/span>(frog_list<\/span>):<\/span>
\n        if<\/span> frog_list<\/span>[<\/span>index<\/span>+<\/span>1<\/span>]<\/span> ==<\/span> ‘<‘<\/span>:<\/span>
\n            temp<\/span> =<\/span> frog_list<\/span>[:]<\/span>
\n            temp<\/span>[<\/span>index<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>+<\/span>1<\/span>]<\/span> =<\/span> temp<\/span>[<\/span>index<\/span>+<\/span>1<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>]<\/span>
\n            if<\/span> recursive<\/span>(temp<\/span>,<\/span> final_list<\/span>):<\/span>
\n                trace_stack<\/span>.<\/span>append<\/span>(frog_list<\/span>)
\n                return<\/span> True<\/span><\/p>\n

        # \u7a7a\u77f3\u5934\u53f3\u8fb9\u7b2c\u4e8c\u53ea<\/span>
\n        if<\/span> index<\/span>+<\/span>2<\/span> <<\/span> len<\/span>(frog_list<\/span>):<\/span>
\n            if<\/span> frog_list<\/span>[<\/span>index<\/span>+<\/span>2<\/span>]<\/span> ==<\/span> ‘<‘<\/span>:<\/span>
\n                temp<\/span> =<\/span> frog_list<\/span>[:]<\/span>
\n                temp<\/span>[<\/span>index<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>+<\/span>2<\/span>]<\/span> =<\/span> temp<\/span>[<\/span>index<\/span>+<\/span>2<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>]<\/span>
\n                if<\/span> recursive<\/span>(temp<\/span>,<\/span> final_list<\/span>):<\/span>
\n                    trace_stack<\/span>.<\/span>append<\/span>(frog_list<\/span>)
\n                    return<\/span> True<\/span><\/p>\n

    # \u7a7a\u77f3\u5934\u5de6\u8fb9\u7b2c\u4e00\u53ea<\/span>
\n    if<\/span> index<\/span>–<\/span>1<\/span> >=<\/span> 0<\/span>:<\/span>
\n        if<\/span> frog_list<\/span>[<\/span>index<\/span>–<\/span>1<\/span>]<\/span> ==<\/span> ‘>’<\/span>:<\/span>
\n            temp<\/span> =<\/span> frog_list<\/span>[:]<\/span>
\n            temp<\/span>[<\/span>index<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>–<\/span>1<\/span>]<\/span> =<\/span> temp<\/span>[<\/span>index<\/span>–<\/span>1<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>]<\/span>
\n            if<\/span> recursive<\/span>(temp<\/span>,<\/span> final_list<\/span>):<\/span>
\n                trace_stack<\/span>.<\/span>append<\/span>(frog_list<\/span>)
\n                return<\/span> True<\/span><\/p>\n

        # \u7a7a\u77f3\u5934\u5de6\u8fb9\u7b2c\u4e8c\u53ea<\/span>
\n        if<\/span> index<\/span>–<\/span>2<\/span> >=<\/span> 0<\/span>:<\/span>
\n            if<\/span> frog_list<\/span>[<\/span>index<\/span>–<\/span>2<\/span>]<\/span> ==<\/span> ‘>’<\/span>:<\/span>
\n                temp<\/span> =<\/span> frog_list<\/span>[:]<\/span>
\n                temp<\/span>[<\/span>index<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>–<\/span>2<\/span>]<\/span> =<\/span> temp<\/span>[<\/span>index<\/span>–<\/span>2<\/span>],<\/span>temp<\/span>[<\/span>index<\/span>]<\/span>
\n                if<\/span> recursive<\/span>(temp<\/span>,<\/span> final_list<\/span>):<\/span>
\n                    trace_stack<\/span>.<\/span>append<\/span>(frog_list<\/span>)
\n                    return<\/span> True<\/span><\/p>\n

    return<\/span> False<\/span><\/p>\n

def<\/span> main<\/span>():<\/span>
\n    global<\/span> trace_stack<\/span>
\n    frog_count<\/span> =<\/span> 3<\/span>
\n    frog_str<\/span> =<\/span> ‘>’<\/span>*<\/span>frog_count<\/span> +<\/span> ‘+’<\/span> +<\/span> ‘<‘<\/span>*<\/span>frog_count<\/span>
\n    frog_list<\/span> =<\/span> [<\/span>i<\/span> for<\/span> i<\/span> in<\/span> frog_str<\/span>]<\/span>
\n    final_list<\/span> =<\/span> frog_list<\/span>[:]<\/span>
\n    final_list<\/span>.<\/span>reverse<\/span>()<\/p>\n

    if<\/span> recursive<\/span>(frog_list<\/span>,<\/span> final_list<\/span>):<\/span>
\n        try<\/span>:<\/span>
\n            while<\/span> True<\/span>:<\/span>
\n                line<\/span> =<\/span> trace_stack<\/span>.<\/span>pop<\/span>()
\n                print<\/span> “”<\/span>.<\/span>join<\/span>(line<\/span>)
\n        except<\/span>:<\/span>
\n            pass<\/span><\/p>\n

if<\/span> __name__<\/span> ==<\/span> “__main__”<\/span>:<\/span>
\n    main<\/span>()<\/p>\n<\/div>\n

\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n

<\/center><\/p>\n","protected":false},"excerpt":{"rendered":"

\u6211\u5f88\u65e9\u5c31\u770b\u5230\u8fd9\u4e2a\u95ee\u9898\uff08\u6700\u65e9\u662f\u5728\u4e00\u6b3e\u7ecf\u5178\u7684\u89e3\u5bc6\u7c7b\u6e38\u620f\u91cc\uff09\uff0c\u73a9\u6cd5\u5f88\u7b80\u5355\uff1a\u6bcf\u53ea\u9752\u86d9\u90fd\u53ef … \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a> \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-72","post","type-post","status-publish","format-standard","hentry","category-program"],"_links":{"self":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts\/72","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/comments?post=72"}],"version-history":[{"count":3,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts\/72\/revisions"}],"predecessor-version":[{"id":578,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/posts\/72\/revisions\/578"}],"wp:attachment":[{"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/media?parent=72"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/categories?post=72"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bl4kraven.com\/index.php\/wp-json\/wp\/v2\/tags?post=72"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}