Reverse a doubly linked list

Hacker
Rank
Score
9585
flag of Bosnia and Herzegovina
00.00
9585
flag of India
00.00
9585
flag of India
00.00
9585
flag of Germany
00.00
9585
flag of United States
00.00
9585
flag of Italy
00.00
9585
flag of
00.00
9585
flag of South Korea
00.00
9585
flag of United States
00.00
9585
flag of Luxembourg
00.00
9585
flag of United States
00.00
9585
flag of Ireland
00.00
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