[英]Java - Adding a new line every n characters without breaking apart the word
所以我一直试图让用户输入的字符串每 n 个字符有一个换行符。 我发现基本上是我写的,我对 Java 很陌生(Python 有一个 function to.fill,但我无法在 Java 中解决这个问题)并且似乎无法让我的字符串不把单词分开。 我将程序设置为每 10 个字符“\n”,但它会在中间打断一些单词......如果它不符合 10 个字符的限制,我希望它接受该单词并将其移动到下一行。
import java.util.Scanner;
public class Wrap {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println("Enter your text: ");
String newString = scan.nextLine();
newString = newString.replaceAll(".{10}", "$0\n");
System.out.println(newString);
/** 第二种方法,还是截断单词...
StringBuilder builtString = new StringBuilder();
int i = 0;
while ((i= builtString.indexOf(newString, i + 10)) != -1) {
builtString.replace(i, i+1, "\n");
}
System.out.println(builtString);
*/
System.out.println(newString);
}
}
单词被分开了:(
Output:
This is a
test and i
t doesnt s
eem to be
working pr
operly.
In Python I got this output which was what I wanted, but Java doesn't seem to have a textwrap function that's "easy" like Python's or at least I haven't figured it out yet. 所需 Output
public static void main(String[] args) {
String text = "This is a test and it doesnt seem to be working properly.";
String[] works = text.split(" "); // get list of works
StringBuilder line = new StringBuilder();
StringBuilder result = new StringBuilder();
for (String work : works) {
if (line.length() + work.length() > 10) { //add line to result if it full
result.append(line).append("\n");
line = new StringBuilder(); //reset line is empty
}
line.append(work).append(" ");
}
result.append(line);
System.out.println(result.toString());
}
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