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  1. import java.util.ArrayList;
  2. import java.util.List;
  3. import java.util.Collections;
  4. import java.util.regex.Pattern;
  5.  
  6. import java.io.IOException;
  7. import java.io.FileInputStream;
  8. import java.io.InputStreamReader;
  9. import java.io.BufferedReader;
  10.  
  11. public class Main {
  12.  
  13. 	public static class Record {
  14. 	    private int mLineNum;
  15. 	    private String mWord;
  16. 	    private double mValue;
  17.  
  18. 	    public Record( int aLineNum, String aWord, double aValue ){
  19. 	        this.mLineNum = aLineNum;
  20. 	        this.mWord    = aWord;
  21. 	        this.mValue   = aValue;
  22. 	    }
  23.  
  24. 	    public String getWord()    { return mWord;    }
  25. 	    public int    getLineNum() { return mLineNum; }
  26. 	    public double getValue()   { return mValue;   }
  27.  
  28.             @Override
  29. 	    public String toString(){
  30. 	    	return this.mWord;
  31. 	    }
  32. 	}
  33.  
  34. 	public static abstract class RecordSplitter {
  35. 		FileInputStream   mFileInputStream;
  36. 		InputStreamReader mInputStreamReader;
  37. 		BufferedReader    mBufferedReader;
  38. 		int               mLineNumber;
  39.  
  40. 		public RecordSplitter( String filename, String encode )
  41. 			throws IOException
  42. 		{
  43. 			mLineNumber        = 0;
  44. 			mFileInputStream   = new FileInputStream(filename);
  45. 			mInputStreamReader = new InputStreamReader( mFileInputStream, encode );
  46. 			mBufferedReader    = new BufferedReader(mInputStreamReader);
  47. 		}
  48.  
  49. 		public Record next() throws IOException {
  50. 			String line;
  51. 			Record record;
  52. 			do {
  53. 				line = mBufferedReader.readLine();
  54. 				record = this.createRecord(mLineNumber++,line);
  55. 			} while( line != null && record == null );
  56.  
  57. 			if( line == null ){
  58. 				mBufferedReader.close();
  59. 				mInputStreamReader.close();
  60. 				mFileInputStream.close();
  61. 				mLineNumber = -1;
  62. 			}
  63. 			return record;
  64. 		}
  65.  
  66. 		public abstract Record createRecord( int aLineNum, String aLine );
  67.  
  68. 	}
  69.  
  70. 	static public String DefaultFileName = "data.txt";
  71. 	static public String DefaultEncode   = "JISAutoDetect";
  72.  
  73. 	public static void main( String aArgs[] ) throws IOException {
  74. 		RecordSplitter rs = new RecordSplitter(
  75. 			aArgs.length > 0 ? aArgs[0] : DefaultFileName,
  76. 			aArgs.length > 1 ? aArgs[1] : DefaultEncode
  77. 		) {
  78. 			@Override
  79. 			public Record createRecord( int aLineNum, String aLine ){
  80. 				if( aLine == null || ! Pattern.matches("^.+\\s[0-9]+(\\.[0-9]+)?$",aLine) ){
  81. 					return null;
  82. 				}
  83. 				String[] kv = aLine.split("\\s");
  84. 				return new Record( aLineNum, kv[0], Double.parseDouble(kv[1]) );
  85. 			}
  86. 		};
  87.  
  88. 		List<Record> list = new ArrayList<Record>();
  89. 		for( Record r = rs.next(); r != null; r = rs.next() ){
  90. 			list.add(r);
  91. 		}
  92.  
  93. 		Collections.sort( list, new java.util.Comparator<Record>(){
  94. 		    @Override
  95. 		    public int compare( Record aObjLhs, Record aObjRhs ) {
  96. 			Record lhs = (Record) aObjLhs;
  97. 		        Record rhs = (Record) aObjRhs;
  98. 		        double sub = lhs.getValue() - rhs.getValue();
  99. 		      	if( sub == 0 ){ sub = lhs.getLineNum() - rhs.getLineNum(); }
  100. 			return -( sub < 0.0 ? -1 : (sub > 0.0 ? 1 : 0) );
  101. 		    }
  102. 		});
  103.  
  104. 		System.out.println(list);
  105. 	}
  106. }
Runtime error #stdin #stdout 0.1s 212864KB
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Standard input is empty
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Standard output is empty
https://ideone.com/QXFBS
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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