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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. interface VowelFunction{
  6. 	boolean isVowel(char ch);
  7. }
  8.  
  9. class EnglishVowelFunction implements VowelFunction{
  10. 	public boolean isVowel(char ch){
  11. 		switch(Character.toLowerCase(ch)){
  12. 		case 'a': return true;
  13. 		case 'e': return true;
  14. 		case 'i': return true;
  15. 		case 'o': return true;
  16. 		case 'u': return true;
  17. 		}
  18. 		return false;
  19. 	}
  20. }
  21.  
  22. interface StringCounter{
  23. 	int count(String s);
  24. }
  25.  
  26. abstract class VowelCounter implements StringCounter{
  27. 	VowelFunction vowelFunc;
  28.  
  29. 	private boolean isVowel(char ch){
  30. 		return vowelFunc.isVowel(ch);
  31. 	}
  32. 	public int count(String s){
  33. 		int count = 0;
  34. 		for(char ch: s.toCharArray()){
  35. 			if(isVowel(ch)){
  36. 				count++;
  37. 			}
  38. 		}
  39. 		return count;
  40. 	}
  41. }
  42.  
  43. class EnglishVowelCounter extends VowelCounter{
  44. 	EnglishVowelCounter(){
  45. 		vowelFunc = new EnglishVowelFunction();
  46. 	}
  47. }
  48.  
  49. //class TestVowelCount
  50. class Ideone{
  51. 	public static void main (String[] args) throws java.lang.Exception{
  52. 		String[] strs = {
  53. 			"abcdefghij",
  54. 			"あげぽよ",
  55. 			"アメンボあかいなあいうえお",
  56. 			"隣の客はよく柿食う客だ",
  57. 			"Köln",
  58. 			"为了容易理解地说明某事物而引用的类似的东西",// https://c...content-available-to-author-only...o.jp/content/%E4%BE%8B%E6%96%87
  59. 		};
  60.  
  61. 		for(String s: strs){
  62. 			StringCounter vowelCounter = new EnglishVowelCounter();
  63. 			int count = vowelCounter.count(s);
  64.  
  65. 			System.out.println(s);
  66. 			System.out.println("vowels:"+count);
  67. 		}
  68. 	}
  69. }
  70.  
Success #stdin #stdout 0.13s 53616KB
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Standard input is empty
stdout
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abcdefghij
vowels:3
あげぽよ
vowels:0
アメンボあかいなあいうえお
vowels:0
隣の客はよく柿食う客だ
vowels:0
Köln
vowels:0
为了容易理解地说明某事物而引用的类似的东西
vowels:0
https://ideone.com/7YV2Fq
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
secret

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