@Override
    public double get(int idx) {
		int i = Arrays.binarySearch(indices, 0, used, idx);
		if (i < 0) {
			throw new IllegalArgumentException("This map does not contain the key: " + idx);
		}
		return values[i];
	}
@ Override public double get ( int idx ) { int i = Arrays . binarySearch ( indices , 0 , used , idx ) ; if ( i < 0 ) { throw new IllegalArgumentException ( "This map does not contain the key: " + idx ) ; } return values [ i ] ; }
/* (non-Javadoc)
@see edu.jhu.util.vector.IntDoubleMap#get(int)