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  1. Prepare
  2. Java
  3. Strings
  4. Valid Username Regular Expression
  5. Leaderboard

Valid Username Regular Expression

Hacker
Rank
Score
adit_nitd
157919
flag of India
00.00
hawvva
157919
flag of India
00.00
Piyush2512
157919
flag of India
00.00
sindhushat
157919
flag of India
00.00
ashu_dwy
157919
flag of India
00.00
shah_parshva96
157919
flag of India
00.00
l3ond
157919
flag of Moldova, Republic of
00.00
jpk244
157919
flag of United States
00.00
aawste
157919
flag of United States
00.00
i_apoorva
157919
flag of India
00.00
ivmos
157919
flag of Spain
00.00
jyotman
157919
flag of India
00.00

[deleted]

157919
flag of null
00.00
MakeSomething
157919
flag of India
00.00
hanshushounak11
157919
flag of India
00.00
rajanW
157919
flag of India
00.00
vignannani
157919
flag of United States
00.00
MoHib85
157919
flag of India
00.00
hacker_ygr8tow5
157919
flag of India
00.00
dbmundada333
157919
flag of India
00.00
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