Sentence Screen Fitting
Posted beiyeqingteng
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了Sentence Screen Fitting相关的知识,希望对你有一定的参考价值。
Given a rows x cols
screen and a sentence represented by a list of words, find how many times the given sentence can be fitted on the screen.
Note:
- A word cannot be split into two lines.
- The order of words in the sentence must remain unchanged.
- Two consecutive words in a line must be separated by a single space.
- Total words in the sentence won‘t exceed 100.
- Length of each word won‘t exceed 10.
- 1 ≤ rows, cols ≤ 20,000.
Example 1:
Input: rows = 2, cols = 8, sentence = ["hello", "world"] Output: 1 Explanation: hello--- world--- The character ‘-‘ signifies an empty space on the screen.
Example 2:
Input: rows = 3, cols = 6, sentence = ["a", "bcd", "e"] Output: 2 Explanation: a-bcd- e-a--- bcd-e- The character ‘-‘ signifies an empty space on the screen.
Example 3:
Input: rows = 4, cols = 5, sentence = ["I", "had", "apple", "pie"] Output: 1 Explanation: I-had apple pie-I had-- The character ‘-‘ signifies an empty space on the screen.
分析:
统计加空格的句子总长度,然后遍历每一行,初始化colsRemaining为cols,然后还需要一个变量idx,来记录当前单词的位置,如果colsRemaining大于0,就进行while循环,如果当前单词的长度小于等于colsRemaining,说明可以放下该单词,那么就减去该单词的长度就是剩余的空间,然后如果此时colsRemaining仍然大于0,则减去空格的长度1,然后idx自增1,如果idx此时超过单词个数的范围了,说明一整句可以放下,那么就有可能出现宽度远大于句子长度的情况,所以我们加上之前放好的一句之外,还要加上colsRemaining/len的个数,然后colsRemaining%len是剩余的位置,此时idx重置为0.
1 class Solution 2 int wordsTyping(String[] sentence, int rows, int cols) 3 String all = ""; 4 for (String word : sentence) 5 all += (word + " "); 6 7 int res = 0, idx = 0, n = sentence.length, len = all.length(); 8 for (int i = 0; i < rows; ++i) 9 int colsRemaining = cols; 10 while (colsRemaining > 0) 11 if (sentence[idx].length() <= colsRemaining) 12 colsRemaining -= sentence[idx].length(); 13 if (colsRemaining > 0) 14 colsRemaining -= 1; 15 16 if (++idx >= n) 17 res += (1 + colsRemaining / len); 18 colsRemaining %= len; 19 idx = 0; 20 21 else 22 break; 23 24 25 26 return res; 27 28
以上是关于Sentence Screen Fitting的主要内容,如果未能解决你的问题,请参考以下文章
[LeetCode] Sentence Screen Fitting 调整屏幕上的句子
LeetCode 418. Sentence Screen Fitting