Concatenate an array with itself

Hacker
Rank
Score
18744
flag of India
00.00
18744
flag of India
00.00
18744
flag of United States
00.00

[deleted]

18744
flag of null
00.00
18744
flag of United States
00.00
18744
flag of Azerbaijan
00.00
18744
flag of United States
00.00
18744
flag of United States
00.00
18744
flag of Hungary
00.00
18744
flag of India
00.00
18744
flag of Argentina
00.00
18744
flag of India
00.00
18744
flag of United States
00.00
18744
flag of India
00.00
18744
flag of United States
00.00
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