Destructure and Swap

Data Structures, Operators & Stringseasy

Course · Section 9: Data Structures, Modern Operators and Strings · Lecture 111: The Spread Operator (...)

Implement `swap(pair)` that takes a two-element array `[a, b]` and returns `[b, a]` using destructuring.

Input: swap([1,2])

Output: [2,1]

Input: swap(["hello","world"])

Output: ["world","hello"]

+ 1 hidden test run on Submit.

Common pitfalls

Approach & explanation (try first)

Returning the reversed pair is the destructuring swap idiom.

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