6 lines
147 B
Ruby
6 lines
147 B
Ruby
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arr1 = [1, 2, 3]
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arr2 = [4, 5, 6]
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arr3 = [7, 8, 9]
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arr4 = arr1 + arr2 # => [1, 2, 3, 4, 5, 6]
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arr4.concat(arr3) # => [1, 2, 3, 4, 5, 6, 7, 8, 9]
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