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Learn Java by solving challenges on HackerRank

Rules

The creator of this contest is solely responsible for setting and communicating the eligibility requirements associated with prizes awarded to participants, as well as for procurement and distribution of all prizes. The contest creator holds HackerRank harmless from and against any and all claims, losses, damages, costs, awards, settlements, orders, or fines.
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Each challenge has a pre-determined score.
A participant’s score depends on the number of test cases a participant’s code submission successfully passes.
If a participant submits more than one solution per challenge, then the participant’s score will reflect the highest score achieved. In a game challenge, the participant's score will reflect the last code submission.
If a participant submits more than one solution per challenge, then the participant’s score will reflect the highest score achieved.
Participants are ranked by score. If two or more participants achieve the same score, then the tie is broken by the total time taken for submitting the last correct code submission.