CodingBat sum3Elem

sum3Elem

Given an array of ints with odd length, return the sum of the first, middle, and the last element of the array. If the length of the array is less than 3, return the sum of all elements inside the array.

sum3Elem([1, 2, 3]) → 6
sum3Elem([1]) → 1
sum3Elem([1, 0, 4, -2, 3]) → 8

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Difficulty: 120

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