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Given two int arrays a and b, each with two elements, return a new array with four elements containing all the elements of a followed by...
X41: plusTwo
Given two int arrays a and b, each with two elements, return
a new array with four elements containing all the elements of a
followed by all the elements of b.
Examples:
plusTwo({1, 2}, {3, 4}) -> {1, 2, 3, 4}
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