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  1. import java.util.regex.Pattern;
  2.  
  3. /* package whatever; // don't place package name! */
  4.  
  5. /* The class name doesn't have to be Main, as long as the class is not public. */
  6. class Main {
  7.     public static void main(String[] args) throws java.lang.Exception {
  8. 		for(int i = 0; i < 500000; i++){
  9.         isAlpha("abc123def456hig789klm000");
  10.         isAlpha("abcdefghijklmnopqrstuvwxyz");}
  11.  
  12. //            	for(int i = 0; i < 5000000; i++){
  13. //        isOnlyWordChars("abc123def456hig789klm000");
  14. //        isOnlyWordChars("abcdefghijklmnopqrstuvwxyz");}
  15.  
  16. //            	for(int i = 0; i < 5000000; i++){
  17. //        isAlpha("abc123def456hig789klm000");
  18. //        isAlpha("abcdefghijklmnopqrstuvwxyz");}
  19. 	}
  20.  
  21. 	private static boolean isOnlyWordChars(String s) {
  22. 		char[] chars = s.toCharArray();
  23. 		for (char c : chars) {
  24. 			if (!Character.isLetter(c)) {
  25. 				return false;
  26. 			}
  27. 		}
  28. 		return true;
  29. 	}
  30.  
  31. 	private static boolean isAlpha(String str) {
  32. 		if (str == null) {
  33. 			return false;
  34. 		}
  35. 		int sz = str.length();
  36. 		for (int i = 0; i < sz; i++) {
  37. 			if (Character.isLetter(str.charAt(i)) == false) {
  38. 				return false;
  39. 			}
  40. 		}
  41. 		return true;
  42. 	}
  43.  
  44. 	private static final Pattern sOnlyWordChars = Pattern.compile("\\w+");
  45.  
  46. 	private static boolean isOnlyWordChars2(String s) {
  47. 		return sOnlyWordChars.matcher(s).matches();
  48. 	}
  49.  
  50. }
Success #stdin #stdout 0.33s 380160KB
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stdin 
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`42
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stdout 
Standard output is empty
https://ideone.com/FEhB0G
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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