public static String repeat()

in src/main/java/org/apache/commons/lang3/StringUtils.java [6059:6095]

• 35 lines of code
• 11 McCabe index (conditional complexity)

    public static String repeat(final String repeat, final int count) {
        // Performance tuned for 2.0 (JDK1.4)
        if (repeat == null) {
            return null;
        }
        if (count <= 0) {
            return EMPTY;
        }
        final int inputLength = repeat.length();
        if (count == 1 || inputLength == 0) {
            return repeat;
        }
        if (inputLength == 1 && count <= PAD_LIMIT) {
            return repeat(repeat.charAt(0), count);
        }

        final int outputLength = inputLength * count;
        switch (inputLength) {
            case 1 :
                return repeat(repeat.charAt(0), count);
            case 2 :
                final char ch0 = repeat.charAt(0);
                final char ch1 = repeat.charAt(1);
                final char[] output2 = new char[outputLength];
                for (int i = count * 2 - 2; i >= 0; i--, i--) {
                    output2[i] = ch0;
                    output2[i + 1] = ch1;
                }
                return new String(output2);
            default :
                final StringBuilder buf = new StringBuilder(outputLength);
                for (int i = 0; i < count; i++) {
                    buf.append(repeat);
                }
                return buf.toString();
        }
    }