{"id":9716,"date":"2022-05-03T17:41:47","date_gmt":"2022-05-04T00:41:47","guid":{"rendered":"https:\/\/zxi.mytechroad.com\/blog\/?p=9716"},"modified":"2022-05-03T17:54:59","modified_gmt":"2022-05-04T00:54:59","slug":"leetcode-2259-remove-digit-from-number-to-maximize-result","status":"publish","type":"post","link":"https:\/\/zxi.mytechroad.com\/blog\/uncategorized\/leetcode-2259-remove-digit-from-number-to-maximize-result\/","title":{"rendered":"\u82b1\u82b1\u9171 LeetCode 2259. Remove Digit From Number to Maximize Result"},"content":{"rendered":"\n

You are given a string number<\/code> representing a positive integer<\/strong> and a character digit<\/code>.<\/p>\n\n\n\n

Return the resulting string after removing exactly one occurrence<\/strong> of <\/em>digit<\/code> from <\/em>number<\/code> such that the value of the resulting string in decimal<\/strong> form is maximized<\/strong><\/em>. The test cases are generated such that digit<\/code> occurs at least once in number<\/code>.<\/p>\n\n\n\n

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

Input:<\/strong> number = \"123\", digit = \"3\"\nOutput:<\/strong> \"12\"\nExplanation:<\/strong> There is only one '3' in \"123\". After removing '3', the result is \"12\".\n<\/pre>\n\n\n\n
Example 2:<\/strong><\/p>\n\n\n\n
Input:<\/strong> number = \"1231\", digit = \"1\"\nOutput:<\/strong> \"231\"\nExplanation:<\/strong> We can remove the first '1' to get \"231\" or remove the second '1' to get \"123\".\nSince 231 > 123, we return \"231\".\n<\/pre>\n\n\n\n
Example 3:<\/strong><\/p>\n\n\n\n
Input:<\/strong> number = \"551\", digit = \"5\"\nOutput:<\/strong> \"51\"\nExplanation:<\/strong> We can remove either the first or second '5' from \"551\".\nBoth result in the string \"51\".\n<\/pre>\n\n\n\n
Constraints:<\/strong><\/p>\n\n\n\n
  • 2 <= number.length <= 100<\/code><\/li>
  • number<\/code> consists of digits from '1'<\/code> to '9'<\/code>.<\/li>
  • digit<\/code> is a digit from '1'<\/code> to '9'<\/code>.<\/li>
  • digit<\/code> occurs at least once in number<\/code>.<\/li><\/ul>\n\n\n\n
    Solution 1: Brute Force<\/strong><\/h2>\n\n\n\n
    Try all possible resulting strings.<\/p>\n\n\n\n
    Time complexity: O(n2<\/sup>)
    Space complexity: O(n)<\/p>\n\n\n\n
    \n
    C++<\/h2>\n
    \n\n
    \n\/\/ Author: Huahua\nclass Solution {\npublic:\n  string removeDigit(string number, char digit) {\n    const int n = number.size();\n    string ans(number.size() - 1, '1');\n    for (int i = 0; i < n; ++i)\n      if (number[i] == digit)\n        ans = max(ans, number.substr(0, i) + number.substr(i + 1));\n    return ans;\n  }\n};\n<\/pre>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"
    You are given a string number representing a positive integer and a character digit. Return the resulting string after removing exactly one occurrence of digit from number such that the value of the resulting string in decimal form is maximized.…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[222,4],"class_list":["post-9716","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-easy","tag-string","entry","simple"],"_links":{"self":[{"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/posts\/9716","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=9716"}],"version-history":[{"count":3,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/posts\/9716\/revisions"}],"predecessor-version":[{"id":9721,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/posts\/9716\/revisions\/9721"}],"wp:attachment":[{"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/media?parent=9716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/categories?post=9716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zxi.mytechroad.com\/blog\/wp-json\/wp\/v2\/tags?post=9716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}