Optimize RunLengthIntegerWriterV2 code for better readability

  if (diffBitsLH > 1) {
      for (int i = 0; i < numLiterals; i++) {
        baseRedLiterals[i] = literals[i] - min;
      }
      brBits95p = utils.percentileBits(baseRedLiterals, 0, numLiterals, 0.95);
      brBits100p = utils.percentileBits(baseRedLiterals, 0, numLiterals, 1.0);
      if ((brBits100p - brBits95p) != 0 && Math.abs(min) < BASE_VALUE_LIMIT) {
        encoding = EncodingType.PATCHED_BASE;
        preparePatchedBlob();
        return;
      } else {
        encoding = EncodingType.DIRECT;
        return;
      }
    } else {
      // if difference in bits between 95th percentile and 100th percentile is
      // 0, then patch length will become 0. Hence we will fallback to direct
      encoding = EncodingType.DIRECT;
      return;
    }

      if (fixedRunLength < MIN_REPEAT) {
          variableRunLength = fixedRunLength;
          fixedRunLength = 0;
          determineEncoding();
          writeValues();
        } else if (fixedRunLength >= MIN_REPEAT
            && fixedRunLength <= MAX_SHORT_REPEAT_LENGTH) {
          encoding = EncodingType.SHORT_REPEAT;
          writeValues();
        } else {
          encoding = EncodingType.DELTA;
          isFixedDelta = true;
          writeValues();
        }

          if (fixedRunLength >= MIN_REPEAT) {
            if (fixedRunLength <= MAX_SHORT_REPEAT_LENGTH) {
              encoding = EncodingType.SHORT_REPEAT;
              writeValues();
            } else {
              encoding = EncodingType.DELTA;
              isFixedDelta = true;
              writeValues();
            }
          }