Ruby Hash - Addition, Deletion, Selection

Hacker
Rank
Score
01
flag of United States
10.00
01
flag of United States
10.00
01
flag of United States
10.00
01
flag of India
10.00
01
flag of Netherlands
10.00
01
flag of China
10.00
01
flag of Slovak Republic
10.00
01
flag of United States
10.00
01
flag of Canada
10.00
01
flag of United States
10.00
01
flag of Luxembourg
10.00
01
flag of Hungary
10.00
01
flag of United States
10.00
01
flag of United States
10.00
01
flag of United States
10.00
01
flag of United States
10.00
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