{ "data": { "question": { "questionId": "1880", "questionFrontendId": "1754", "categoryTitle": "Algorithms", "boundTopicId": 591899, "title": "Largest Merge Of Two Strings", "titleSlug": "largest-merge-of-two-strings", "content": "

You are given two strings word1 and word2. You want to construct a string merge in the following way: while either word1 or word2 are non-empty, choose one of the following options:

\n\n\n\n

Return the lexicographically largest merge you can construct.

\n\n

A string a is lexicographically larger than a string b (of the same length) if in the first position where a and b differ, a has a character strictly larger than the corresponding character in b. For example, "abcd" is lexicographically larger than "abcc" because the first position they differ is at the fourth character, and d is greater than c.

\n\n

 

\n

Example 1:

\n\n
\nInput: word1 = "cabaa", word2 = "bcaaa"\nOutput: "cbcabaaaaa"\nExplanation: One way to get the lexicographically largest merge is:\n- Take from word1: merge = "c", word1 = "abaa", word2 = "bcaaa"\n- Take from word2: merge = "cb", word1 = "abaa", word2 = "caaa"\n- Take from word2: merge = "cbc", word1 = "abaa", word2 = "aaa"\n- Take from word1: merge = "cbca", word1 = "baa", word2 = "aaa"\n- Take from word1: merge = "cbcab", word1 = "aa", word2 = "aaa"\n- Append the remaining 5 a's from word1 and word2 at the end of merge.\n
\n\n

Example 2:

\n\n
\nInput: word1 = "abcabc", word2 = "abdcaba"\nOutput: "abdcabcabcaba"\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "构造字典序最大的合并字符串", "translatedContent": "

给你两个字符串 word1 和 word2 。你需要按下述方式构造一个新字符串 merge ：如果 word1 或 word2 非空，选择 下面选项之一 继续操作：

\n\n\n\n

返回你可以构造的字典序 最大 的合并字符串 merge 。

\n\n

长度相同的两个字符串 a 和 b 比较字典序大小，如果在 a 和 b 出现不同的第一个位置，a 中字符在字母表中的出现顺序位于 b 中相应字符之后，就认为字符串 a 按字典序比字符串 b 更大。例如，\"abcd\" 按字典序比 \"abcc\" 更大，因为两个字符串出现不同的第一个位置是第四个字符，而 d 在字母表中的出现顺序位于 c 之后。

\n\n

 

\n\n

示例 1：

\n\n
\n输入：word1 = \"cabaa\", word2 = \"bcaaa\"\n输出：\"cbcabaaaaa\"\n解释：构造字典序最大的合并字符串，可行的一种方法如下所示：\n- 从 word1 中取第一个字符：merge = \"c\"，word1 = \"abaa\"，word2 = \"bcaaa\"\n- 从 word2 中取第一个字符：merge = \"cb\"，word1 = \"abaa\"，word2 = \"caaa\"\n- 从 word2 中取第一个字符：merge = \"cbc\"，word1 = \"abaa\"，word2 = \"aaa\"\n- 从 word1 中取第一个字符：merge = \"cbca\"，word1 = \"baa\"，word2 = \"aaa\"\n- 从 word1 中取第一个字符：merge = \"cbcab\"，word1 = \"aa\"，word2 = \"aaa\"\n- 将 word1 和 word2 中剩下的 5 个 a 附加到 merge 的末尾。\n
\n\n

示例 2：

\n\n
\n输入：word1 = \"abcabc\", word2 = \"abdcaba\"\n输出：\"abdcabcabcaba\"\n
\n\n

 

\n\n

提示：

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