{ "data": { "question": { "questionId": "2569", "questionFrontendId": "2478", "categoryTitle": "Algorithms", "boundTopicId": 1974252, "title": "Number of Beautiful Partitions", "titleSlug": "number-of-beautiful-partitions", "content": "
You are given a string s
that consists of the digits '1'
to '9'
and two integers k
and minLength
.
A partition of s
is called beautiful if:
s
is partitioned into k
non-intersecting substrings.minLength
.'2'
, '3'
, '5'
, and '7'
, and the rest of the digits are non-prime.Return the number of beautiful partitions of s
. Since the answer may be very large, return it modulo 109 + 7
.
A substring is a contiguous sequence of characters within a string.
\n\n\n
Example 1:
\n\n\nInput: s = "23542185131", k = 3, minLength = 2\nOutput: 3\nExplanation: There exists three ways to create a beautiful partition:\n"2354 | 218 | 5131"\n"2354 | 21851 | 31"\n"2354218 | 51 | 31"\n\n\n
Example 2:
\n\n\nInput: s = "23542185131", k = 3, minLength = 3\nOutput: 1\nExplanation: There exists one way to create a beautiful partition: "2354 | 218 | 5131".\n\n\n
Example 3:
\n\n\nInput: s = "3312958", k = 3, minLength = 1\nOutput: 1\nExplanation: There exists one way to create a beautiful partition: "331 | 29 | 58".\n\n\n
\n
Constraints:
\n\n1 <= k, minLength <= s.length <= 1000
s
consists of the digits '1'
to '9'
.给你一个字符串 s
,每个字符是数字 '1'
到 '9'
,再给你两个整数 k
和 minLength
。
如果对 s
的分割满足以下条件,那么我们认为它是一个 完美 分割:
s
被分成 k
段互不相交的子字符串。minLength
。'2'
,'3'
,'5'
和 '7'
,剩下的都是非质数数字。请你返回 s
的 完美 分割数目。由于答案可能很大,请返回答案对 109 + 7
取余 后的结果。
一个 子字符串 是字符串中一段连续字符串序列。
\n\n\n\n
示例 1:
\n\n\n输入:s = \"23542185131\", k = 3, minLength = 2\n输出:3\n解释:存在 3 种完美分割方案:\n\"2354 | 218 | 5131\"\n\"2354 | 21851 | 31\"\n\"2354218 | 51 | 31\"\n\n\n
示例 2:
\n\n\n输入:s = \"23542185131\", k = 3, minLength = 3\n输出:1\n解释:存在一种完美分割方案:\"2354 | 218 | 5131\" 。\n\n\n
示例 3:
\n\n\n输入:s = \"3312958\", k = 3, minLength = 1\n输出:1\n解释:存在一种完美分割方案:\"331 | 29 | 58\" 。\n\n\n
\n\n
提示:
\n\n1 <= k, minLength <= s.length <= 1000
s
每个字符都为数字 '1'
到 '9'
之一。\\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>, 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Python 2.7.12<\\/code><\\/p>\\r\\n\\r\\n
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