Java Singleton Pattern

Hacker
Rank
Score
83670
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83670
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83670
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83670
flag of United Kingdom
00.00
83670
flag of India
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83670
flag of Sweden
00.00
83670
flag of Vietnam
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83670
flag of Morocco
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83670
flag of Algeria
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83670
flag of Spain
00.00
83670
flag of India
00.00
83670
flag of India
00.00
83670
flag of United States
00.00
83670
flag of India
00.00
83670
flag of India
00.00
83670
flag of United States
00.00
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