java.util.scanner - Explain this line written in JAVA

Question

In HACKERRANK this line of code occurs very frequently. I think this is to skip whitespaces but what does that " u2028u2029u0085" thing mean

 scanner.skip("(
|[

u2028u2029u0085])?");

Answer 1

Scanner.skip skips a input which matches the pattern, here the pattern is :-

( |[ u2028u2029u0085])?

• ? matches exactly zero or one of the previous character.
• | Alternative
• [] Matches single character present in
• matches a carriage return

• newline

• u2028 matches the character with index 2018 base 16(8232 base 10 or 20050 base 8) case sensitive

• u2029 matches the character with index 2029 base 16(8233 base 10 or 20051 base 8) case sensitive
• u0085 matches the character with index 85 base 16(133 base 10 or 205 base 8) case sensitive

1st Alternative

• matches a carriage return (ASCII 13)
• matches a line-feed (newline) character (ASCII 10)

2nd Alternative [ u2028u2029u0085]

• Match a single character present in the list below [ u2028u2029u0085]
• matches a line-feed (newline) character (ASCII 10)
• matches a carriage return (ASCII 13)
• u2028 matches the character with index 202816 (823210 or 200508) literally (case sensitive) LINE SEPARATOR
• u2029 matches the character with index 202916 (823310 or 200518) literally (case sensitive) PARAGRAPH SEPARATOR
• u0085 matches the character with index 8516 (13310 or 2058) literally (case sensitive) NEXT LINE