You are given a 0-indexed array of strings words. Each string consists of lowercase English letters only. No letter occurs more than once in any string of words.
Two strings s1 and s2 are said to be connected if the set of letters of s2 can be obtained from the set of letters of s1 by any one of the following operations:
s1.s1.s1 with any letter, including itself.The array words can be divided into one or more non-intersecting groups. A string belongs to a group if any one of the following is true:
Note that the strings in words should be grouped in such a manner that a string belonging to a group cannot be connected to a string present in any other group. It can be proved that such an arrangement is always unique.
Return an array ans of size 2 where:
ans[0] is the maximum number of groups words can be divided into, andans[1] is the size of the largest group.\n
Example 1:
\n\n\nInput: words = ["a","b","ab","cde"]\nOutput: [2,3]\nExplanation:\n- words[0] can be used to obtain words[1] (by replacing 'a' with 'b'), and words[2] (by adding 'b'). So words[0] is connected to words[1] and words[2].\n- words[1] can be used to obtain words[0] (by replacing 'b' with 'a'), and words[2] (by adding 'a'). So words[1] is connected to words[0] and words[2].\n- words[2] can be used to obtain words[0] (by deleting 'b'), and words[1] (by deleting 'a'). So words[2] is connected to words[0] and words[1].\n- words[3] is not connected to any string in words.\nThus, words can be divided into 2 groups ["a","b","ab"] and ["cde"]. The size of the largest group is 3. \n\n\n
Example 2:
\n\n\nInput: words = ["a","ab","abc"]\nOutput: [1,3]\nExplanation:\n- words[0] is connected to words[1].\n- words[1] is connected to words[0] and words[2].\n- words[2] is connected to words[1].\nSince all strings are connected to each other, they should be grouped together.\nThus, the size of the largest group is 3.\n\n\n
\n
Constraints:
\n\n1 <= words.length <= 2 * 1041 <= words[i].length <= 26words[i] consists of lowercase English letters only.words[i].给你一个下标从 0 开始的字符串数组 words 。每个字符串都只包含 小写英文字母 。words 中任意一个子串中，每个字母都至多只出现一次。
如果通过以下操作之一，我们可以从 s1 的字母集合得到 s2 的字母集合，那么我们称这两个字符串为 关联的 ：
s1 的字母集合中添加一个字母。s1 的字母集合中删去一个字母。s1 中的一个字母替换成另外任意一个字母（也可以替换为这个字母本身）。数组 words 可以分为一个或者多个无交集的 组 。如果一个字符串与另一个字符串关联，那么它们应当属于同一个组。
注意，你需要确保分好组后，一个组内的任一字符串与其他组的字符串都不关联。可以证明在这个条件下，分组方案是唯一的。
\n\n请你返回一个长度为 2 的数组 ans ：
ans[0] 是 words 分组后的 总组数 。ans[1] 是字符串数目最多的组所包含的字符串数目。\n\n
示例 1：
\n\n\n输入：words = [\"a\",\"b\",\"ab\",\"cde\"]\n输出：[2,3]\n解释：\n- words[0] 可以得到 words[1] （将 'a' 替换为 'b'）和 words[2] （添加 'b'）。所以 words[0] 与 words[1] 和 words[2] 关联。\n- words[1] 可以得到 words[0] （将 'b' 替换为 'a'）和 words[2] （添加 'a'）。所以 words[1] 与 words[0] 和 words[2] 关联。\n- words[2] 可以得到 words[0] （删去 'b'）和 words[1] （删去 'a'）。所以 words[2] 与 words[0] 和 words[1] 关联。\n- words[3] 与 words 中其他字符串都不关联。\n所以，words 可以分成 2 个组 [\"a\",\"b\",\"ab\"] 和 [\"cde\"] 。最大的组大小为 3 。\n\n\n
示例 2：
\n\n\n输入：words = [\"a\",\"ab\",\"abc\"]\n输出：[1,3]\n解释：\n- words[0] 与 words[1] 关联。\n- words[1] 与 words[0] 和 words[2] 关联。\n- words[2] 与 words[1] 关联。\n由于所有字符串与其他字符串都关联，所以它们全部在同一个组内。\n所以最大的组大小为 3 。\n\n\n
\n\n
提示：
\n\n1 <= words.length <= 2 * 1041 <= words[i].length <= 26words[i] 只包含小写英文字母。words[i] 中每个字母最多只出现一次。\\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 \\u5bfc\\u5165\\uff0c\\u5982\\uff1aarray<\\/a>, bisect<\\/a>, collections<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n \\u6ce8\\u610f Python 2.7 \\u5c06\\u57282020\\u5e74\\u540e\\u4e0d\\u518d\\u7ef4\\u62a4<\\/a>\\u3002 \\u5982\\u60f3\\u4f7f\\u7528\\u6700\\u65b0\\u7248\\u7684Python\\uff0c\\u8bf7\\u9009\\u62e9Python 3\\u3002<\\/p>\"],\"c\":[\"C\",\" \\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>\\r\\n\\r\\n \\u5982\\u60f3\\u4f7f\\u7528\\u54c8\\u5e0c\\u8868\\u8fd0\\u7b97, \\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 uthash<\\/a>\\u3002 \\\"uthash.h\\\"\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5bfc\\u5165\\u3002\\u8bf7\\u770b\\u5982\\u4e0b\\u793a\\u4f8b:<\\/p>\\r\\n\\r\\n 1. 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