418 Sentence Screen Fitting¶

Problem:¶

Given a rows x cols screen and a sentence represented by a list of non-empty 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 is greater than 0 and 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.

Solutions:¶

public class Solution {
    public int wordsTyping(String[] sentence, int rows, int cols) {
        int count = 0;
        int i = 0, j = 0;
        int k = 0;
        while (i < rows) {
            if (count != 0 && j == 0 && k == 0) {
                count = count * (rows / i);
                i = (rows / i) * i; 
            }
            if (k == sentence.length) {
                count ++;
                k = 0;
                continue;
            }
            if (sentence[k].length() + j > cols) {
                i ++;
                j = 0;
                continue;
            }
            else {
                j = sentence[k].length() + j + 1;
                k ++;
            }
        }
        return count;
    }
}

public class Solution {
    public int wordsTyping(String[] sentence, int rows, int cols) {
        String s = "";
        for (int i = 0; i < sentence.length; i ++) {
            s += sentence[i] + " ";
        }
        int total = 0, len = s.length();
        for (int i = 0; i < rows; i ++) {
            total += cols;
            if (s.charAt(total % len) == ' ') {
                total ++;
            }
            else {
                while ((total % len) > 0 && s.charAt((total % len) - 1) != ' ') {
                    total --;
                }
            }
        }
        return total / len;
    }
}