Insert a node at the head of a linked list

Hacker
Rank
Score
360266
flag of India
00.00
360266
flag of India
00.00
360266
flag of United States
00.00
360266
flag of Taiwan
00.00
360266
flag of India
00.00
360266
flag of Palestinian Territory, Occupied
00.00
360266
flag of Canada
00.00
360266
flag of United States
00.00
360266
flag of United States
00.00
360266
flag of Ukraine
00.00
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