java - 我如何计算在 java 中以 "im"结尾的人键入的条目？

Question

我想计算在控制台中以“im”结尾的条目(字符串)，那么我该如何作为入门者呢？

import java.lang.String; 
import java.util.Scanner;

public class WordCount {
    public static void main (String[]args){

        final String SENTINEL = "END";
        Scanner sc = new Scanner(System.in);
        String text = "xy";

        do {
            System.out.print("Type a text or type "+SENTINEL+" when you are done. ");
            text = sc.nextLine();
            } while(!text.equalsIgnoreCase(SENTINEL));

            boolean IMcheck = text.endsWith("im");
            int count = 0;
            if(IMcheck == true){
                count++;
            }
            System.out.println("You have typed "+ count +" texts that end in \"im\" ");
        } 
    }

Answer 1

正如评论者所说，您需要将 if 语句移到 do-while 循环中。这里不需要变量“IMcheck”。

为解决此问题，我已将您用于分配“IMcheck”变量的代码放入您的 if 语句中，并将其移至您的 do-while 循环中。

public class WordCount {

   public static void main (String[]args) {
      final String SENTINEL = "END";
      int count = 0;
      Scanner sc = new Scanner(System.in);
      String text = "xy";

   do {
         if(text.endsWith("im"))
            count++;

         System.out.print("Type a text or type "+SENTINEL+" when you are done. ");
         text = sc.nextLine();

   } while(!text.equalsIgnoreCase(SENTINEL));

   System.out.println("You have typed "+ count +" texts that end in \"im\" ");
   }
}