Review

class BidiOrder {
    /**
     * Return levels array breaking lines at offsets in linebreaks. <br>
     * Rule L1.
     * <p>
     * The returned levels array contains the resolved level for each
     * bidi code passed to the constructor.
     * <p>
     * The linebreaks array must include at least one value.
     * The values must be in strictly increasing order (no duplicates)
     * between 1 and the length of the text, inclusive.  The last value
     * must be the length of the text.
     *
     * @param linebreaks the offsets at which to break the paragraph
     * @return the resolved levels of the text
     */
    public byte[] getLevels(int[] linebreaks) {
        
        // Note that since the previous processing has removed all
        // P, S, and WS values from resultTypes, the values referred to
        // in these rules are the initial types, before any processing
        // has been applied (including processing of overrides).
        //
        // This example implementation has reinserted explicit format codes
        // and BN, in order that the levels array correspond to the
        // initial text.  Their final placement is not normative.
        // These codes are treated like WS in this implementation,
        // so they don't interrupt sequences of WS.
        
        validateLineBreaks(linebreaks, textLength);
        
        byte[] result = (byte[])resultLevels.clone(); // will be returned to caller
        
        // don't worry about linebreaks since if there is a break within
        // a series of WS values preceding S, the linebreak itself
        // causes the reset.
        for (int i = 0; i < result.length; ++i) {
            byte t = initialTypes[i];
            if (t == B || t == S) {
                // Rule L1, clauses one and two.
                result[i] = paragraphEmbeddingLevel;
                
                // Rule L1, clause three.
                for (int j = i - 1; j >= 0; --j) {
                    if (isWhitespace(initialTypes[j])) { // including format codes
                        result[j] = paragraphEmbeddingLevel;
                    } else {
                        break;
                    }
                }
            }
        }
        
        // Rule L1, clause four.
        int start = 0;
        for (int i = 0; i < linebreaks.length; ++i) {
            int limit = linebreaks[i];
            for (int j = limit - 1; j >= start; --j) {
                if (isWhitespace(initialTypes[j])) { // including format codes
                    result[j] = paragraphEmbeddingLevel;
                } else {
                    break;
                }
            }
            
            start = limit;
        }
        
        return result;
    }

}