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Published: Feb 20, 2024 License: MIT Imports: 0 Imported by: 0

README

截断句子

句子 是一个单词列表,列表中的单词之间用单个空格隔开,且不存在前导或尾随空格。每个单词仅由大小写英文字母组成(不含标点符号)。

  • 例如,"Hello World""HELLO""hello world hello world" 都是句子。 给你一个句子 s​​​​​​ 和一个整数 k​​​​​​ ,请你将 s​​ 截断 ​,​​​使截断后的句子仅含 k​​​​​​ 个单词。返回 截断s​​​​_​​ 后得到的句子。_

示例 1:

输入:s = "Hello how are you Contestant", k = 4
输出:"Hello how are you"
解释:
s 中的单词为 ["Hello", "how" "are", "you", "Contestant"]
前 4 个单词为 ["Hello", "how", "are", "you"]
因此,应当返回 "Hello how are you"

示例 2:

输入:s = "What is the solution to this problem", k = 4
输出:"What is the solution"
解释:
s 中的单词为 ["What", "is" "the", "solution", "to", "this", "problem"]
前 4 个单词为 ["What", "is", "the", "solution"]
因此,应当返回 "What is the solution"

示例 3:

输入:s = "chopper is not a tanuki", k = 5
输出:"chopper is not a tanuki"

提示:

  • 1 <= s.length <= 500
  • k 的取值范围是 [1,  s 中单词的数目]
  • s 仅由大小写英文字母和空格组成
  • s 中的单词之间由单个空格隔开
  • 不存在前导或尾随空格

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