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Find the sum of the first n perfect squares when n is negative, return 0. e.g. sumOfFirstNSquares(3) is 1 + 4 + 9 which is 14 sumOfFirstNSquares(1) → 1 sumOfFirstNSquares(2) → 5 sumOfFirstNSquares(3) → 14 ...Save, Compile, Run (ctrl-enter) |
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Difficulty: 5
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