Sort.java

import java.util.*;

public final class Sort {
    private Sort(){};
    
    private static void swap(Vector v,int i, int j) {
    	Object o1 = v.elementAt(i);
    	Object o2 = v.elementAt(j);
    	v.setElementAt(o2,i);
    	v.setElementAt(o1,j);    
    }
    public static void bubble(Vector v) {
    for (int i = v.size(); 
    	     --i>=0; ) {
        boolean swapped = false;
        for (int j = 0; j<i; j++) {
            Comparator c1 = (Comparator)
            	v.elementAt(j);
            Comparator c2 = (Comparator)
            	v.elementAt(j+1);
            int c = c1.compare(c1,c2);
    	    if (c > 0) 
    	    	swap(v,j,j+1);
            }
    	}
    }
}

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