{"id":3155,"date":"2020-03-07T13:38:41","date_gmt":"2020-03-07T05:38:41","guid":{"rendered":"http:\/\/www.sniper97.cn\/?p=3155"},"modified":"2020-03-07T13:38:41","modified_gmt":"2020-03-07T05:38:41","slug":"%e3%80%90leetcode%e3%80%910087-%e6%89%b0%e4%b9%b1%e5%ad%97%e7%ac%a6%e4%b8%b2","status":"publish","type":"post","link":"http:\/\/www.sniper97.cn\/index.php\/note\/algorithm\/3155\/","title":{"rendered":"\u3010LeetCode\u3011*0087 \u6270\u4e71\u5b57\u7b26\u4e32"},"content":{"rendered":"\n<p><a href=\"https:\/\/leetcode-cn.com\/problems\/scramble-string\/\">https:\/\/leetcode-cn.com\/problems\/scramble-string\/<\/a><\/p>\n\n\n<pre class=\"wp-block-code\"><code>import functools\nclass Solution:\n    @functools.lru_cache(None)\n    def isScramble(self, s1: str, s2: str) -> bool:\n        if s1 == s2:\n            return True\n        if sorted(s1) != sorted(s2):\n            return False\n        for i in range(1, len(s1)):\n            if self.isScramble(s1[:i],s2[:i]) and self.isScramble(s1[i:],s2[i:]):\n                return True\n            if self.isScramble(s1[:i],s2[-i:]) and self.isScramble(s1[i:],s2[:-i]):\n                return True\n        return False\n<\/code><\/pre>\n\n\n<p><strong>\u601d\u8def<\/strong>\uff1a\u8fd9\u9053\u9898\u7b2c\u4e00\u773c\u770b\u4e0a\u53bb\u5e94\u8be5\u662fdp\uff0c\u4ece\u7a97\u53e3\u5927\u5c0f1\u5230n\uff0c\u5224\u65ad\u7ffb\u8f6c\u76f8\u540c\u8fd8\u662f\u4e0d\u7ffb\u8f6c\u76f8\u540c\u8fd8\u662f\u600e\u4e48\u90fd\u4e0d\u76f8\u540c\uff08\u8fd9\u4e2a\u601d\u8def\u8003\u8651\u5c11\u4e86\uff0c\u4f46\u662f\u603b\u7684\u6765\u8bf4\u786e\u5b9e\u662f\u8fd9\u4e2a\u601d\u8def\uff09\uff0c\u540e\u6765\u6211\u7a81\u7136\u610f\u8bc6\u5230\u8fd9\u9053\u9898\u53ef\u4ee5\u4e0d\u7528dp\u90a3\u4e48\u9ebb\u70e6\uff0c\u4e8e\u662f\u5c31\u6709\u4e86\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n<pre class=\"wp-block-preformatted\"># -*- coding:utf-8 -*-\n<em>\n<\/em>from collections import deque\nclass Solution(object):\n    def isScramble(self, s1, s2):\n        <em>\"\"\"\n        <\/em><strong><em>:type<\/em><\/strong><em> s1: str\n        <\/em><strong><em>:type<\/em><\/strong><em> s2: str\n        <\/em><strong><em>:rtype<\/em><\/strong><em>: bool\n        \"\"\"\n        <\/em>n = len(s1)\n        queue = deque()\n        # \u5904\u7406\u8fde\u7eed\u91cd\u590d\u5b57\u7b26\n        latter_idx = 0\n        for i in range(1, n):\n            if s1[i] != s1[i - 1]:\n                break\n            latter_idx = i\n        s1 = s1[latter_idx:]\n        for i in range(n):\n            if len(s2) == n and s2[i] == s1[0]:\n                for j in range(i, n - 1):\n                    if s2[i] == s2[i + 1]:\n                        s2 = s2[:j] + s2[j + 1:]\n                    elif s2[i] != s2[i + 1]:\n                        break\n        if len(s1) != len(s2):\n            return False\n        n = len(s1)\n        current_idx = 0\n        # \u5224\u65ad\n        while current_idx &lt; n:\n            # \u5bfb\u627e\u7ffb\u8f6c\u4f4d\u7f6e\n            same_idx = 0\n            for j in range(current_idx, n):\n                if s2[j] == s1[current_idx]:\n                    same_idx = j + 1\n                    break\n                if j == n - 1:\n                    return False\n            # \u5165\u6808\n            for k in range(current_idx, same_idx):\n                queue.append(s1[k])\n            # \u6bd4\u8f83\u51fa\u6808\n            for k in range(current_idx, same_idx):\n                if s2[k] == queue[-1]:\n                    queue.pop()\n                elif s2[k] == queue[0]:\n                    queue.popleft()\n                else:\n                    return False\n            current_idx = same_idx\n            pass\n        return True\n        pass\nif __name__ == '__main__':\n    s1 = 'great'\n    s2 = 'rgeat'\n    s1 = 'abc'\n    s2 = 'bca '\n    print(Solution().isScramble(s1, s2))\n<\/pre>\n\n\n<p>\u4e0a\u9762\u7684\u4ee3\u7801\u6574\u4f53\u601d\u8def\u662f\uff1a\u73b0\u5728s2\u4e2d\u627es1\u76840\u5b57\u7b26\uff0c\u7136\u540e\u5224\u65ad\u8fd9\u4e24\u4e2a\u5b50\u4e32\u662f\u4e0d\u662f\u76f8\u540c\u7684\uff08\u8fd9\u91cc\u7684\u76f8\u540c\u5b9a\u4e49\u4e3a\u6b63\u5e8f\u5012\u5e8f\u53c8\u4e00\u4e2a\u76f8\u540c\u5373\u53ef\uff0c\u4e0b\u540c\uff09\uff0c\u5982\u679c\u662f\u66f4\u65b0\u5f00\u59cb\u7d22\u5f15\uff0c\u7ee7\u7eed\u4ece\u8fd9\u4e2a\u7d22\u5f15\u7ee7\u7eed\u5411\u540e\u5224\u65ad\uff0c\u5341\u5206\u7c7b\u4f3c\u6811\u7684\u524d\u5e8f\u904d\u5386\u548c\u4e2d\u5e8f\u904d\u5386\u7684\u90a3\u4e2a\u627e\u53d1\u3002<\/p>\n\n\n<p>\u5199\u7684\u65f6\u5019\u5c31\u610f\u8bc6\u5230\u8fd9\u4e2a\u7b97\u6cd5\u7684\u5c40\u9650\u6027\u5728\u4e8e\u5bf9\u4e8e\u524dn\u4e2a\u76f8\u540c\u5b57\u7b26\u7684\uff08\u6bd4\u5982aab\uff0c\u524d2\u4e2a\u76f8\u540c\uff09\u6709\u5c40\u9650\u6027\uff0c\u56e0\u6b64\u4e5f\u5728\u6700\u5f00\u59cb\u5199\u4e86\u5904\u7406\u529e\u6cd5\uff0c\u76f4\u63a5\u505a\u4e00\u6b21\u67e5\u627e\uff0c\u5c06aab\u53d8\u6210ab\uff08s2\u5f53\u7136\u4e5f\u505a\u7b49\u4ef7\u53d8\u5316\uff09\uff0c\u4f46\u662f\u63d0\u4ea4\u7684\u65f6\u5019\u53d1\u73b0\uff0c\u6211\u4ece\u6700\u5f00\u59cb\u5c31\u5c11\u60f3\u4e86\u4e00\u79cd\u60c5\u51b5\uff0c\u5c31\u662f\u7a76\u6781\u65e0\u654c\u4ea4\u6362\uff0c\u4e0d\u4ec5\u5b57\u7b26\u4ea4\u6362\uff0c\u5b50\u4e32\u4e5f\u4ea4\u6362\uff0c\u5c31\u786c\u6362\u3002<\/p>\n\n\n<p>\u8fd9\u65f6\u5019\u5c31\u5e94\u8be5\u4e0d\u80fd\u6295\u673a\u53d6\u5de7\u4e86\uff0c\u5e94\u8be5\u8001\u8001\u5b9e\u5b9e\u7684\u8fdb\u884c\u9012\u5f52\u67e5\u627e\u6216\u8005\u8fdb\u884cdp\uff0c\u8fd9\u9053\u9898dp\u5e76\u4e0d\u6bd4\u9012\u5f52\u5feb\uff08\u505a\u7f13\u5b58\u7684\u9012\u5f52\uff09\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/leetcode-cn.com\/problems\/scramble-string\/  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[10],"tags":[],"views":3631,"_links":{"self":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/3155"}],"collection":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/comments?post=3155"}],"version-history":[{"count":0,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/posts\/3155\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/media?parent=3155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/categories?post=3155"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.sniper97.cn\/index.php\/wp-json\/wp\/v2\/tags?post=3155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}