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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		String s = "Type unique chars!";
  10. 		System.out.println(f(s.toCharArray()));
  11. 		System.out.println(g(s));
  12. 		System.out.println(h(new StringBuffer(s)));
  13. 	}
  14.  
  15. 	static String f(char[]s){String t="";for(char c:s)t+=t.contains(c+"")?"":c;return t;}
  16. 	static String g(String s){return""+new StringBuffer((new StringBuffer(s).reverse()+"").replaceAll("(.)(?=.*\\1)","")).reverse();}
  17. 	static String h(StringBuffer s){return""+new StringBuffer((s.reverse()+"").replaceAll("(.)(?=.*\\1)","")).reverse();}
  18. }
Success #stdin #stdout 0.04s 4386816KB
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Standard input is empty
stdout
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Type uniqchars!
Type uniqchars!
Type uniqchars!
https://ideone.com/1elfz0
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
secret

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