mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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181 lines
16 KiB
JSON
181 lines
16 KiB
JSON
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"title": "Construct K Palindrome Strings",
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"content": "<p>Given a string <code>s</code> and an integer <code>k</code>, return <code>true</code> <em>if you can use all the characters in </em><code>s</code><em> to construct </em><code>k</code><em> palindrome strings or </em><code>false</code><em> otherwise</em>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = "annabelle", k = 2\n<strong>Output:</strong> true\n<strong>Explanation:</strong> You can construct two palindromes using all characters in s.\nSome possible constructions "anna" + "elble", "anbna" + "elle", "anellena" + "b"\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = "leetcode", k = 3\n<strong>Output:</strong> false\n<strong>Explanation:</strong> It is impossible to construct 3 palindromes using all the characters of s.\n</pre>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<pre>\n<strong>Input:</strong> s = "true", k = 4\n<strong>Output:</strong> true\n<strong>Explanation:</strong> The only possible solution is to put each character in a separate string.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= s.length <= 10<sup>5</sup></code></li>\n\t<li><code>s</code> consists of lowercase English letters.</li>\n\t<li><code>1 <= k <= 10<sup>5</sup></code></li>\n</ul>\n",
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"hints": [
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"If the s.length < k we cannot construct k strings from s and answer is false.",
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"If the number of characters that have odd counts is > k then the minimum number of palindrome strings we can construct is > k and answer is false.",
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"Otherwise you can construct exactly k palindrome strings and answer is true (why ?)."
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],
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"solution": null,
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"sampleTestCase": "\"annabelle\"\n2",
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