CodingBat insert

insert

Given an array of ints, int index, and int newValue, insert the newValue at the given index and return a new array. You can always assume the given index is a valid index in the range.

insert([], 0, 111) → [111]
insert([1, 1, 1], 1, 0) → [1, 0, 1, 1]
insert([-1, 2, -4, 8], 4, 50) → [-1, 2, -4, 8, 50]

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