{"id":7765,"date":"2020-12-05T21:13:07","date_gmt":"2020-12-06T05:13:07","guid":{"rendered":"https:\/\/zxi.mytechroad.com\/blog\/?p=7765"},"modified":"2020-12-05T21:13:26","modified_gmt":"2020-12-06T05:13:26","slug":"leetcode-1678-goal-parser-interpretation","status":"publish","type":"post","link":"https:\/\/zxi.mytechroad.com\/blog\/string\/leetcode-1678-goal-parser-interpretation\/","title":{"rendered":"\u82b1\u82b1\u9171 LeetCode 1678. Goal Parser Interpretation"},"content":{"rendered":"\n

You own a Goal Parser<\/strong> that can interpret a string command<\/code>. The command<\/code> consists of an alphabet of \"G\"<\/code>, \"()\"<\/code> and\/or \"(al)\"<\/code> in some order. The Goal Parser will interpret \"G\"<\/code> as the string \"G\"<\/code>, \"()\"<\/code> as the string \"o\"<\/code>, and \"(al)\"<\/code> as the string \"al\"<\/code>. The interpreted strings are then concatenated in the original order.<\/p>\n\n\n\n

Given the string command<\/code>, return the Goal Parser<\/strong>‘s interpretation of <\/em>command<\/code>.<\/p>\n\n\n\n

Example 1:<\/strong><\/p>\n\n\n\n

Input:<\/strong> command = \"G()(al)\"\nOutput:<\/strong> \"Goal\"\nExplanation:<\/strong> The Goal Parser interprets the command as follows:\nG -> G\n() -> o\n(al) -> al\nThe final concatenated result is \"Goal\".\n<\/pre>\n\n\n\n
Example 2:<\/strong><\/p>\n\n\n\n
Input:<\/strong> command = \"G()()()()(al)\"\nOutput:<\/strong> \"Gooooal\"\n<\/pre>\n\n\n\n
Example 3:<\/strong><\/p>\n\n\n\n
Input:<\/strong> command = \"(al)G(al)()()G\"\nOutput:<\/strong> \"alGalooG\"\n<\/pre>\n\n\n\n
Constraints:<\/strong><\/p>\n\n\n\n
  • 1 <= command.length <= 100<\/code><\/li>
  • command<\/code> consists of \"G\"<\/code>, \"()\"<\/code>, and\/or \"(al)\"<\/code> in some order.<\/li><\/ul>\n\n\n\n
    Solution: String<\/strong><\/h2>\n\n\n\n
    If we encounter ‘(‘ check the next character to determine whether it’s ‘()’ or ‘(al’)<\/p>\n\n\n\n
    Time complexity: O(n)
    Space complexity: O(n)<\/p>\n\n\n\n
    \n
    C++<\/h2>\n
    \n\n
    \nclass Solution {\npublic:\n  string interpret(string command) {\n    string ans;\n    for (int i = 0; i < command.size(); ++i) {\n      if (command[i] == 'G') ans += \"G\";\n      else if (command[i] == '(') {\n        if (command[i + 1] == ')') ans += \"o\";\n        else ans += \"al\";\n      }\n    }\n    return ans;\n  }\n};\n<\/pre>\n\n<\/div>
    Python3<\/h2>\n
    \n\n
    \nclass Solution:\n  def interpret(self, command: str) -> str:\n    ans = []\n    for i, c in enumerate(command):\n      if c == 'G': ans.append('G')\n      elif c == '(':\n        ans.append('o' if command[i + 1] == ')' else 'al')\n    return ''.join(ans)\n<\/pre>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"
    You own a Goal Parser that can interpret a string command. The command consists of an alphabet of “G”, “()” and\/or “(al)” in some order. The Goal Parser will interpret “G” as the string “G”, “()” as the string “o”, and “(al)” as…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[222,171,4],"class_list":["post-7765","post","type-post","status-publish","format-standard","hentry","category-string","tag-easy","tag-parser","tag-string","entry","simple"],"_links":{"self":[{"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/posts\/7765","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/comments?post=7765"}],"version-history":[{"count":2,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/posts\/7765\/revisions"}],"predecessor-version":[{"id":7767,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/posts\/7765\/revisions\/7767"}],"wp:attachment":[{"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/media?parent=7765"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/categories?post=7765"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/tags?post=7765"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}