Concatenate an array with itself

Hacker
Rank
Score
18821
flag of Taiwan
00.00
18821
flag of Netherlands
00.00
18821
flag of Japan
00.00
18821
flag of India
00.00
18821
flag of India
00.00
18821
flag of India
00.00
18821
flag of India
00.00
18821
flag of Egypt
00.00
18821
flag of India
00.00
18821
flag of Italy
00.00
18821
flag of United States
00.00
18821
flag of Poland
00.00
18821
flag of India
00.00
18821
flag of China
00.00
18821
flag of India
00.00
18821
flag of India
00.00
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