计算单词输入的次数 [英] counting the number of times a word is typed in

问题描述

我发现了一个类似我的问题的解决方案：

  import java.util.Scanner; 
 public class Counter 
 {
 public static void main（String args []）
 {
 String a =，b =; 
 Scanner s = new Scanner（System.in）; 
 
 System.out.println（输入字符串：）; 
 a = s.nextLine（）; 
 while（b.length（）！= 1）
 {
 System.out.println（输入单个字符：）; 
 b = s.next（）; 
} 
 
 int counter = 0; 
 for（int i = 0; i  {
 if（b.equals（a.charAt（i）+））
 counter ++; 
} 
 System.out.println（Number of occurrences：+ counter）; 
} 
} 
  

此程序仅计算选定字母的次数出现。我需要做同样的，但用一个完整的词。我如何修改这个代码来做我需要的呢？我不是最伟大的编程。您的帮助非常感谢。感谢！

解决方案

您可以使用拆分字符串

您可以拆分在空格上的字符串如

  String [] words = a.split（）; 
  

然后循环使用

  for（String word：words）{
 if（word.equals（testWordToCompare）
 counter ++; 
} 
} 
  
 
 
 
因此，您的新代码将如下所示：
 code> import java.util.Scanner; 
 public class Counter 
 {
 public static void main（String args []）
 {
 String a = ，testWordToCompare =exists; 
 Scanner s = new Scanner（System.in）; 
 
 System.out.println（Enter a string：）; 
a = s.nextLine（）; 
 String [] words = a.split（）; 
 int counter = 0; 
 for（String word：words）{
 if （word.quals（testWordToCompare）
 counter ++; 
} 
} 
 System.out.println（+ testWordToCompare +的出现次数是：+ counter）; 
} 
} 
  
 
i found a solution similar to my problem here:
import java.util.Scanner;
public class Counter
{
    public static void main ( String args[] )
    {
        String a = "", b = "";
        Scanner s = new Scanner( System.in );

        System.out.println( "Enter a string: " );
        a = s.nextLine();
        while ( b.length() != 1 )
        {
            System.out.println( "Enter a single character: " );
            b = s.next();
        }

        int counter = 0;
        for ( int i = 0; i < a.length(); i++ )
        {
            if ( b.equals(a.charAt( i ) +"") )
                counter++;
        }
        System.out.println( "Number of occurrences: " + counter );
    }
}
this program only counts the amount of times a selected letter appears. i need to do the same but with an entire word. How would i modify this code to do what I need it to? I'm not the greatest at programming. Your help is greatly appreciated. Thanks!
解决方案
You can use split string

You can split the string on space like 
String[] words =a.split(" ");
Then loop through it like
for(String word : words) {
    if(word.equals(testWordToCompare)
        counter++;
    }
}
So your new code would look like :
import java.util.Scanner;
public class Counter
{
    public static void main ( String args[] )
    {
        String a = "", testWordToCompare = "exist";
        Scanner s = new Scanner( System.in );

        System.out.println( "Enter a string: " );
        a = s.nextLine();
        String[] words =a.split(" ");
        int counter = 0;
        for(String word : words) {
           if(word.equals(testWordToCompare)
               counter++;
           }
        }
        System.out.println( "Number of occurrences of " + testWordToCompare +" is : " + counter );
    }
}


                        
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