Reverse a doubly linked list

Hacker
Rank
Score
01
flag of Hungary
100.00
01
flag of United States
100.00
01
flag of Taiwan
100.00
01
flag of United States
100.00
01
flag of Canada
100.00
01
flag of United States
100.00
01
flag of United States
100.00
01
flag of South Korea
100.00
01
flag of Poland
100.00
01
flag of
100.00
01
flag of United States
100.00
01
flag of India
100.00
01
flag of Russian Federation
100.00
01
flag of United States
100.00
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