Reverse a doubly linked list

Hacker
Rank
Score
9640
flag of Philippines
00.00
9640
flag of Canada
00.00
9640
flag of Uruguay
00.00
9640
flag of India
00.00
9640
flag of United States
00.00
9640
flag of India
00.00
9640
flag of United States
00.00
9640
flag of United States
00.00
9640
flag of United States
00.00
9640
flag of Ukraine
00.00
9640
flag of Tanzania, United Republic of
00.00
9640
flag of United States
00.00
9640
flag of Hong Kong
00.00
9640
flag of United States
00.00
9640
flag of India
00.00
9640
flag of United States
00.00
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