You are given two 0-indexed arrays of strings startWords and targetWords. Each string consists of lowercase English letters only.
For each string in targetWords, check if it is possible to choose a string from startWords and perform a conversion operation on it to be equal to that from targetWords.
The conversion operation is described in the following two steps:
\n\n"abc", the letters 'd', 'e', or 'y' can be added to it, but not 'a'. If 'd' is added, the resulting string will be "abcd"."abcd" can be rearranged to "acbd", "bacd", "cbda", and so on. Note that it can also be rearranged to "abcd" itself.Return the number of strings in targetWords that can be obtained by performing the operations on any string of startWords.
Note that you will only be verifying if the string in targetWords can be obtained from a string in startWords by performing the operations. The strings in startWords do not actually change during this process.
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Example 1:
\n\n\nInput: startWords = ["ant","act","tack"], targetWords = ["tack","act","acti"]\nOutput: 2\nExplanation:\n- In order to form targetWords[0] = "tack", we use startWords[1] = "act", append 'k' to it, and rearrange "actk" to "tack".\n- There is no string in startWords that can be used to obtain targetWords[1] = "act".\n Note that "act" does exist in startWords, but we must append one letter to the string before rearranging it.\n- In order to form targetWords[2] = "acti", we use startWords[1] = "act", append 'i' to it, and rearrange "acti" to "acti" itself.\n\n\n
Example 2:
\n\n\nInput: startWords = ["ab","a"], targetWords = ["abc","abcd"]\nOutput: 1\nExplanation:\n- In order to form targetWords[0] = "abc", we use startWords[0] = "ab", add 'c' to it, and rearrange it to "abc".\n- There is no string in startWords that can be used to obtain targetWords[1] = "abcd".\n\n\n
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Constraints:
\n\n1 <= startWords.length, targetWords.length <= 5 * 1041 <= startWords[i].length, targetWords[j].length <= 26startWords and targetWords consists of lowercase English letters only.startWords or targetWords.给你两个下标从 0 开始的字符串数组 startWords 和 targetWords 。每个字符串都仅由 小写英文字母 组成。
对于 targetWords 中的每个字符串，检查是否能够从 startWords 中选出一个字符串，执行一次 转换操作 ，得到的结果与当前 targetWords 字符串相等。
转换操作 如下面两步所述：
\n\n\"abc\" ，那么字母 'd'、'e' 或 'y' 都可以加到该字符串末尾，但 'a' 就不行。如果追加的是 'd' ，那么结果字符串为 \"abcd\" 。\"abcd\" 可以重排为 \"acbd\"、\"bacd\"、\"cbda\"，以此类推。注意，它也可以重排为 \"abcd\" 自身。找出 targetWords 中有多少字符串能够由 startWords 中的 任一 字符串执行上述转换操作获得。返回 targetWords 中这类 字符串的数目 。
注意：你仅能验证 targetWords 中的字符串是否可以由 startWords 中的某个字符串经执行操作获得。startWords 中的字符串在这一过程中 不 发生实际变更。
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示例 1：
\n\n\n输入：startWords = [\"ant\",\"act\",\"tack\"], targetWords = [\"tack\",\"act\",\"acti\"]\n输出：2\n解释：\n- 为了形成 targetWords[0] = \"tack\" ，可以选用 startWords[1] = \"act\" ，追加字母 'k' ，并重排 \"actk\" 为 \"tack\" 。\n- startWords 中不存在可以用于获得 targetWords[1] = \"act\" 的字符串。\n 注意 \"act\" 确实存在于 startWords ，但是 必须 在重排前给这个字符串追加一个字母。\n- 为了形成 targetWords[2] = \"acti\" ，可以选用 startWords[1] = \"act\" ，追加字母 'i' ，并重排 \"acti\" 为 \"acti\" 自身。\n\n\n
示例 2：
\n\n\n输入：startWords = [\"ab\",\"a\"], targetWords = [\"abc\",\"abcd\"]\n输出：1\n解释：\n- 为了形成 targetWords[0] = \"abc\" ，可以选用 startWords[0] = \"ab\" ，追加字母 'c' ，并重排为 \"abc\" 。\n- startWords 中不存在可以用于获得 targetWords[1] = \"abcd\" 的字符串。\n\n\n
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提示：
\n\n1 <= startWords.length, targetWords.length <= 5 * 1041 <= startWords[i].length, targetWords[j].length <= 26startWords 和 targetWords 中的每个字符串都仅由小写英文字母组成startWords 或 targetWords 的任一字符串中，每个字母至多出现一次\\u7248\\u672c\\uff1a \\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 \\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\"],\"java\":[\"Java\",\" \\u7248\\u672c\\uff1a \\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u88ab\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u5305\\u542b Pair \\u7c7b: https:\\/\\/docs.oracle.com\\/javase\\/8\\/javafx\\/api\\/javafx\\/util\\/Pair.html <\\/p>\"],\"python\":[\"Python\",\" \\u7248\\u672c\\uff1a \\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 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