Question

我已经可以计算元音，辅音，空格和特殊字符。我必须使用一些初学者技术。 [编辑：鉴于最后一个声明和以下代码，这个问题听起来像家庭作业的帮助]没有什么太复杂。

import java.util.Scanner;

 public class JBlahBlah
 {
static Scanner sc = new Scanner(System.in                                                      );

public static void main(String[] Theory)
{

    JWaffles MyWaffles = new JWaffles();

    MyWaffles.ProgramHeading();

    System.out.println("Enter a string:"                                                       );
    String SentenceContents = sc.nextLine(                                                     );

    int VowelCount = 0,ConsonantCount = 0,WordCount = 0,SpaceCount = 0,SpecialCharCount = 0     ;

    for (int Bat = 0; Bat < SentenceContents.length(); Bat++)
    {
        char Vowels = SentenceContents.charAt(Bat         );
        if (      (Vowels == 'A') || (Vowels == 'a'       )
               || (Vowels == 'E') || (Vowels == 'e'       )
               || (Vowels == 'I') || (Vowels == 'i'       )
               || (Vowels == 'O') || (Vowels == 'o'       )
               || (Vowels == 'U') || (Vowels == 'u'      ))
        VowelCount++;

        char Consonants = SentenceContents.charAt(Bat);
        if (      (Consonants == 'B') || (Consonants == 'b')
               || (Consonants == 'C') || (Consonants == 'c')
               || (Consonants == 'D') || (Consonants == 'd')
               || (Consonants == 'F') || (Consonants == 'f')
               || (Consonants == 'G') || (Consonants == 'g')
               || (Consonants == 'H') || (Consonants == 'h')
               || (Consonants == 'J') || (Consonants == 'j')
               || (Consonants == 'K') || (Consonants == 'k')
               || (Consonants == 'L') || (Consonants == 'l')
               || (Consonants == 'M') || (Consonants == 'm')
               || (Consonants == 'N') || (Consonants == 'n')
               || (Consonants == 'P') || (Consonants == 'p')
               || (Consonants == 'Q') || (Consonants == 'q')
               || (Consonants == 'R') || (Consonants == 'r')
               || (Consonants == 'S') || (Consonants == 's')
               || (Consonants == 'T') || (Consonants == 't')
               || (Consonants == 'V') || (Consonants == 'v')
               || (Consonants == 'W') || (Consonants == 'w')
               || (Consonants == 'X') || (Consonants == 'x')
               || (Consonants == 'Y') || (Consonants == 'y')
               || (Consonants == 'Z') || (Consonants == 'z') )

        ConsonantCount++;

        char Spaces = SentenceContents.charAt(Bat);
                    if ( (Spaces == ' ') )

        SpaceCount++;

        char SpecialCharacters = SentenceContents.charAt(Bat);
                    if (      (SpecialCharacters == '!') || (SpecialCharacters == '@'   )
                           || (SpecialCharacters == '#') || (SpecialCharacters == '$'   )
                           || (SpecialCharacters == '%') || (SpecialCharacters == '^'   )
                           || (SpecialCharacters == '&') || (SpecialCharacters == '*'   )
                           || (SpecialCharacters == '(') || (SpecialCharacters == ')'   )
                           || (SpecialCharacters == '-') || (SpecialCharacters == '_'   )
                           || (SpecialCharacters == '+') || (SpecialCharacters == '='   )
                           || (SpecialCharacters == ',') || (SpecialCharacters == '<'   )
                           || (SpecialCharacters == '.') || (SpecialCharacters == '>'   )
                           || (SpecialCharacters == '?') || (SpecialCharacters == '/'   )
                           || (SpecialCharacters == '"') || (SpecialCharacters == ';'   )
                           || (SpecialCharacters == ':') || (SpecialCharacters == '{'   )
                           || (SpecialCharacters == '[') || (SpecialCharacters == '}'   )
                           || (SpecialCharacters == ']') || (SpecialCharacters == '~'   )
                           || (SpecialCharacters == '`') || ((SpecialCharacters == '1'  )
                           || (SpecialCharacters == '2') || (SpecialCharacters == '3'   )
                           || (SpecialCharacters == '4') || (SpecialCharacters == '5'   )
                           || (SpecialCharacters == '6') || (SpecialCharacters == '7'   )
                           || (SpecialCharacters == '8') || (SpecialCharacters == '9'   )
                           || (SpecialCharacters == '|')                               ))

        SpecialCharCount++;
    }
    System.out.println("There are " + VowelCount + " vowels in this sentance"                  );
    System.out.println("There are " + ConsonantCount + " consonants in this sentance"          );
    System.out.println("There are " + SpaceCount + " spaces in this sentance"                  );
    System.out.println("There are " + SpecialCharCount + " special characters in this sentance");

}
}

我怎样才能使程序打印出单词数量？如果它们之间有几个空格怎么办？

Answer 1

以下是使用API计算每种字符类型的方法：

int spaceCount = sentence.length() - sentence.replaceAll(" ", "").length();
int vowelCount = sentence.length() - sentence.replaceAll("(?i)[aeiou]", "").length();
int consonantCount = sentence.length() - sentence.replaceAll("(?i)(?=[a-z])[^aeiou]", "").length();
int specialCount = sentence.length() - sentence.replaceAll("(?i)[^a-z ]", "").length();
int wordCount = sentence.trim().split("\\s+").length;

虽然你可能认为这不是“教你如何编程”，但它实际上是：学习一门语言的一部分是通过让语言为繁重的工作而学习 not 代码。你。

如果您不熟悉正则表达式，可以访问此site

Answer 2

使用 java.text.BreakIterator 包中的BreakIterator类

使用BreakIterator，您可以在句子中找到许多单词......

import java.text.BreakIterator;

BreakIterator boundary = BreakIterator.getWordInstance();

BreakIterator能够做更多...... 喜欢找到字符，行，句子等...

有关详细信息，请参阅此链接：

http://docs.oracle.com/javase/6/docs/api/java/text/BreakIterator.html

Answer 3

如果他们在单词之间有几个空格怎么办？

使用此选项仅用一个空格替换两个或多个空格，然后继续算法

String stringOnlyOneSpace = stringTwoOrMoreSpaces.trim().replaceAll(" +", " ");

如何才能使程序打印出句子中的单词数？

3 个答案: