Count the number of elements in an Array

Hacker
Rank
Score
01
flag of China
01.00
01
flag of Switzerland
01.00
01
flag of United States
01.00
01
flag of United States
01.00
01
flag of Greece
01.00
01
flag of India
01.00
01
flag of Italy
01.00

[deleted]

01
flag of null
01.00
01
flag of United Kingdom
01.00
01
flag of United States
01.00
01
flag of United States
01.00
01
flag of Russia
01.00
01
flag of India
01.00
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