Delete duplicate-value nodes from a sorted linked list

Hacker
Rank
Score
01
flag of United States
05.00
01
flag of United States
05.00
01
flag of United States
05.00
01
flag of United States
05.00
01
flag of India
05.00
01
flag of India
05.00
01
flag of Ireland
05.00
01
flag of India
05.00
01
flag of United States
05.00
01
flag of India
05.00
01
flag of Serbia
05.00
01
flag of India
05.00

[deleted]

01
flag of null
05.00
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