Kotlin
Java
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Solve: Plus Two
Given two int[]s of size 2, return a new array of size four containing the elements
from the first array followed by the elements from the second array.
So {1, 2} and {3, 4} would yield {1, 2, 3, 4}.
int[] plusTwo(int[] a, int[] b) {
return null; // You may need to remove this starter code
}