in src/main/java/org/apache/datasketches/memory/internal/Util.java [73:82]
public static String toHexSeparated(final Memory mem, final int offset, final int lengthBytes) {
final int len = (int)Math.min(mem.getCapacity(), lengthBytes);
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < len; i++) {
final int b = mem.getByte(offset + i);
sb.append(zeroPad(Integer.toString(b), 2));
sb.append(" ");
}
return sb.toString();
}