Problem Description
If you ever tried to read a html document on a Macintosh, you know how hard it is if no Netscape is installed.
Now, who can forget to install a HTML browser? This is very easy because most of the times you don’t need one on a MAC because there is a Acrobate Reader which is native to MAC. But if you ever need one, what do you do?
Your task is to write a small html-browser. It should only display the content of the input-file and knows only the html commands (tags)
which is a linebreak and
which is a horizontal ruler. Then you should treat all tabulators, spaces and newlines as one space and display the resulting text with no more than 80 characters on a line.
Input
The input consists of a text you should display. This text consists of words and HTML tags separated by one or more spaces, tabulators or newlines.
A word is a sequence of letters, numbers and punctuation. For example, “abc,123” is one word, but “abc, 123” are two words, namely “abc,” and “123”. A word is always shorter than 81 characters and does not contain any ‘<’ or ‘>’. All HTML tags are either
or
.
Output
You should display the the resulting text using this rules:
. If you read a word in the input and the resulting line does not get longer than 80 chars, print it, else print it on a new line.
. If you read a
in the input, start a new line.
. If you read a
in the input, start a new line unless you already are at the beginning of a line, display 80 characters of ‘-’ and start a new line (again).
The last line is ended by a newline character.
Sample Input
Hallo, dies ist eine ziemlich lange Zeile, die in Htmlaber nicht umgebrochen wird.
Zwei
produzieren zwei Newlines. Es gibt auch noch das tag
was einen Trenner darstellt.Zwei
produzieren zwei Horizontal Rulers.Achtung mehrere Leerzeichen irritierenHtml genauso wenig wiemehrere Leerzeilen.
Sample Output
Hallo, dies ist eine ziemlich lange Zeile, die in Html aber nicht umgebrochenwird.Zweiproduzieren zwei Newlines. Es gibt auch noch das tag--------------------------------------------------------------------------------was einen Trenner darstellt. Zwei----------------------------------------------------------------------------------------------------------------------------------------------------------------produzieren zwei Horizontal Rulers. Achtung mehrere Leerzeichen irritieren Htmlgenauso wenig wie mehrere Leerzeilen.
注：（1） 每行最多80个字符，如果加上最后一个字大于80，最后一个字就会移到下一行。(2)
如果当前行字符数等于0，则直接输出，否则先输出回车，在输出中，
,只含有
和
标签(3) 最后一篇文章应该有一个回车
equals表示相等，指向对象的相等；而compareto的相等，就是内容的相等。
但是有一个问题，很奇怪~我总是用equalsPE，用compareto没问题~~~不懂~
代码注释标识！
有大牛知道原因，请在评论区的指导下，谢谢~
import java.util.Scanner;public class Main{ public static void main(String[] args) { Scanner sc = new Scanner(System.in); String result = new String(""); String str; while (sc.hasNext()) { str = sc.next(); if ("".equals(str)) { continue; } if ("
".equals(str)) { System.out.println(result); result = ""; } else if ("
".equals(str)) { if (result.compareTo("")!=0) { // if (!"".equals(result)) {/会WA！！！我不知道为什么！！！！ System.out.println(result); } gong.print(); result = ""; } else { String temp = result; if ((temp " " str).length() < 80) { if (!"".equals(result)) { result = " " str; } else { result = str;// 每行的第一个输入 } } else { System.out.println(result); result = str; } } } if (!("".equals(result))) { System.out.println(result); } }}class gong { static void print() { for (int i = 0; i < 80; i ) System.out.print("-"); System.out.println(); }}< 80) { if (!''.equals(result)) { result = ' ' str; } else { result = str;// 每一行的第一个输入 } } else { System.out.println(result); result = str; } } } if (!(''.equals(result))) { System.out.println(result); } }}class gong { static void print() { for (int i = 0; i < 80; i ) System.out.print('-'); System.out.println(); }}