Question

如何将输入字符串的每个单词设置在新行上并将输出放置在ASCII框中？

我有以下代码：

import java.util.Scanner;


public class labSix {
public static void main(String[] args) {
    Scanner in = new Scanner(System.in);

    System.out.print("Enter a line of text: ");
    String line = in.nextLine();

    printBox(line);

}

// Returns the length of the longest token in the line. 
private static int getMaxLength(String... strings) {
    int len = Integer.MIN_VALUE;
    for (String str : strings) {
        len = Math.max(str.length(), len);
    }
    return len;
}

// Pad the strings with spaces.
private static String padString(String str, int len) {
    StringBuilder sb = new StringBuilder(str);
    return sb.append(fill(' ', len - str.length())).toString();
}

// Fill the string to the amount determined in padString.
private static String fill(char ch, int len) {
    StringBuilder sb = new StringBuilder(len);
    for (int i = 0; i < len; i++) {
        sb.append(ch);
    }
    return sb.toString();
}


// Print the box
public static void printBox(String... strings) {
    int maxBoxWidth = getMaxLength(strings);
    String line = "+" + fill('-', maxBoxWidth + 2) + "+";
    System.out.println(line);
    for (String str : strings) {
        System.out.printf("| %s |%n", padString(str, maxBoxWidth));
    }
    System.out.println(line);
}


}

如果我尝试分割字符串并将“”替换为“ \ n”，则只有一个“ |”添加到第一行和最后一行。

关于如何实现此目标的任何建议？

Answer 1

将通话更改为printBox。当前，您传递了一个名为String的{{1}}，而是通过在空间上分割行来传递line（s）的数组。喜欢，

String

仅此更改，当我输入“ Hello world Goodbye world”时，我得到

printBox(line.split(" "));

Answer 2

printBox函数仅接收一个包含全部文本的字符串，而不是预期的数组。您可以更改它以接收一个数组，并拆分接收到的文本以传递给该函数，如下所示：

import java.util.Scanner;

public class LabSix {
  public static void main(String[] args) {
      Scanner in = new Scanner(System.in);

      System.out.print("Enter a line of text: ");
      String line = in.nextLine();

      printBox(line.split(" "));

  }

  // Returns the length of the longest token in the line. 
  private static int getMaxLength(String... strings) {
      int len = Integer.MIN_VALUE;
      for (String str : strings) {
          len = Math.max(str.length(), len);
      }
      return len;
  }

  // Pad the strings with spaces.
  private static String padString(String str, int len) {
      StringBuilder sb = new StringBuilder(str);
      return sb.append(fill(' ', len - str.length())).toString();
  }

  // Fill the string to the amount determined in padString.
  private static String fill(char ch, int len) {
      StringBuilder sb = new StringBuilder(len);
      for (int i = 0; i < len; i++) {
          sb.append(ch);
      }
      return sb.toString();
  }


  // Print the box
  public static void printBox(String[] strings) {
      int maxBoxWidth = getMaxLength(strings);
      String line = "+" + fill('-', maxBoxWidth + 2) + "+";
      System.out.println(line);
      for (String str : strings) {
          System.out.printf("| %s |%n", padString(str, maxBoxWidth));
      }
      System.out.println(line);
  }
}

结果将是这样的：

Enter a line of text: test longertest
+------------+
| test       |
| longertest |
+------------+

如何在新行中设置每个单词？

2 个答案: