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

Valid Username Regular Expression

Hacker
Rank
Score
lavanyasuja25
159987
flag of India
00.00
dharshuvijayaku1
159987
flag of India
00.00
paviroopa2003
159987
flag of India
00.00
Smit10
159987
flag of India
00.00
meatri1994
159987
flag of India
00.00
sarges3
159987
flag of United States
00.00
gman007
159987
flag of United States
00.00
sudheesh001
159987
flag of United States
00.00
dinesh_majeti
159987
flag of United States
00.00
jvm_biter
159987
flag of Bangladesh
00.00
gsaikrishna28
159987
flag of United States
00.00
piyushpcegarg
159987
flag of India
00.00
abbasshah17
159987
flag of Pakistan
00.00
nitin_bhasin10
159987
flag of India
00.00
shefali18
159987
flag of India
00.00
sahithithandra
159987
flag of Canada
00.00
abhijeet_saxena7
159987
flag of India
00.00
tank_777
159987
flag of India
00.00
Avi15
159987
flag of India
00.00
Roshanware
159987
flag of India
00.00
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