We are to write the letters of a given string
S
, from left to right into lines. Each line has maximum width 100 units, and if writing a letter would cause the width of the line to exceed 100 units, it is written on the next line. We are given an array widths
, an array where widths[0] is the width of 'a', widths[1] is the width of 'b', ..., and widths[25] is the width of 'z'.
Now answer two questions: how many lines have at least one character from
S
, and what is the width used by the last such line? Return your answer as an integer list of length 2.Example : Input: widths = [10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10] S = "abcdefghijklmnopqrstuvwxyz" Output: [3, 60] Explanation: All letters have the same length of 10. To write all 26 letters, we need two full lines and one line with 60 units.
Example : Input: widths = [4,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10] S = "bbbcccdddaaa" Output: [2, 4] Explanation: All letters except 'a' have the same length of 10, and "bbbcccdddaa" will cover 9 * 10 + 2 * 4 = 98 units. For the last 'a', it is written on the second line because there is only 2 units left in the first line. So the answer is 2 lines, plus 4 units in the second line.
Note:
- The length of
S
will be in the range [1, 1000]. S
will only contain lowercase letters.widths
is an array of length26
.widths[i]
will be in the range of[2, 10]
.
Code (Java):
class Solution { public int[] numberOfLines(int[] widths, String S) { int cLines = 1; int cChCurrentLine = 0; for (int i = 0; i < S.length(); i++) { char c = S.charAt(i); cChCurrentLine += widths[c - 'a']; if (cChCurrentLine > 100) { cLines++; cChCurrentLine = widths[c - 'a']; } } int[] ans = new int[2]; ans[0] = cLines; ans[1] = cChCurrentLine; return ans; } }
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