Reverse a doubly linked list

Hacker
Rank
Score
9585
flag of United States
00.00
9585
flag of Australia
00.00
9585
flag of United States
00.00
9585
flag of Taiwan
00.00
9585
flag of United States
00.00
9585
flag of Canada
00.00
9585
flag of Australia
00.00
9585
flag of Ghana
00.00
9585
flag of Sri Lanka
00.00
9585
flag of Canada
00.00
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