Concatenate an array with itself

Hacker
Rank
Score
18824
flag of Sri Lanka
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of India
00.00

[deleted]

18824
flag of null
00.00
18824
flag of India
00.00
18824
flag of Spain
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of Thailand
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of India
00.00
18824
flag of India
00.00
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