{ "data": { "question": { "questionId": "68", "questionFrontendId": "68", "categoryTitle": "Algorithms", "boundTopicId": 1775, "title": "Text Justification", "titleSlug": "text-justification", "content": "
Given an array of strings words
and a width maxWidth
, format the text such that each line has exactly maxWidth
characters and is fully (left and right) justified.
You should pack your words in a greedy approach; that is, pack as many words as you can in each line. Pad extra spaces ' '
when necessary so that each line has exactly maxWidth
characters.
Extra spaces between words should be distributed as evenly as possible. If the number of spaces on a line does not divide evenly between words, the empty slots on the left will be assigned more spaces than the slots on the right.
\n\nFor the last line of text, it should be left-justified, and no extra space is inserted between words.
\n\nNote:
\n\n0
and not exceed maxWidth
.words
contains at least one word.\n
Example 1:
\n\n\nInput: words = ["This", "is", "an", "example", "of", "text", "justification."], maxWidth = 16\nOutput:\n[\n "This is an",\n "example of text",\n "justification. "\n]\n\n
Example 2:
\n\n\nInput: words = ["What","must","be","acknowledgment","shall","be"], maxWidth = 16\nOutput:\n[\n "What must be",\n "acknowledgment ",\n "shall be "\n]\nExplanation: Note that the last line is "shall be " instead of "shall be", because the last line must be left-justified instead of fully-justified.\nNote that the second line is also left-justified because it contains only one word.\n\n
Example 3:
\n\n\nInput: words = ["Science","is","what","we","understand","well","enough","to","explain","to","a","computer.","Art","is","everything","else","we","do"], maxWidth = 20\nOutput:\n[\n "Science is what we",\n "understand well",\n "enough to explain to",\n "a computer. Art is",\n "everything else we",\n "do "\n]\n\n
\n
Constraints:
\n\n1 <= words.length <= 300
1 <= words[i].length <= 20
words[i]
consists of only English letters and symbols.1 <= maxWidth <= 100
words[i].length <= maxWidth
给定一个单词数组 words
和一个长度 maxWidth
,重新排版单词,使其成为每行恰好有 maxWidth
个字符,且左右两端对齐的文本。
你应该使用 “贪心算法” 来放置给定的单词;也就是说,尽可能多地往每行中放置单词。必要时可用空格 ' '
填充,使得每行恰好有 maxWidth 个字符。
要求尽可能均匀分配单词间的空格数量。如果某一行单词间的空格不能均匀分配,则左侧放置的空格数要多于右侧的空格数。
\n\n文本的最后一行应为左对齐,且单词之间不插入额外的空格。
\n\n注意:
\n\nwords
至少包含一个单词。\n\n
示例 1:
\n\n\n输入: words = [\"This\", \"is\", \"an\", \"example\", \"of\", \"text\", \"justification.\"], maxWidth = 16\n输出:\n[\n \"This is an\",\n \"example of text\",\n \"justification. \"\n]\n\n\n
示例 2:
\n\n\n输入:words = [\"What\",\"must\",\"be\",\"acknowledgment\",\"shall\",\"be\"], maxWidth = 16\n输出:\n[\n \"What must be\",\n \"acknowledgment \",\n \"shall be \"\n]\n解释: 注意最后一行的格式应为 \"shall be \" 而不是 \"shall be\",\n 因为最后一行应为左对齐,而不是左右两端对齐。 \n 第二行同样为左对齐,这是因为这行只包含一个单词。\n\n\n
示例 3:
\n\n\n输入:words = [\"Science\",\"is\",\"what\",\"we\",\"understand\",\"well\",\"enough\",\"to\",\"explain\",\"to\",\"a\",\"computer.\",\"Art\",\"is\",\"everything\",\"else\",\"we\",\"do\"],maxWidth = 20\n输出:\n[\n \"Science is what we\",\n \"understand well\",\n \"enough to explain to\",\n \"a computer. Art is\",\n \"everything else we\",\n \"do \"\n]\n\n\n
\n\n
提示:
\n\n1 <= words.length <= 300
1 <= words[i].length <= 20
words[i]
由小写英文字母和符号组成1 <= maxWidth <= 100
words[i].length <= maxWidth
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