How should I practice Swap Two Numbers?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Google phone screen problems in FastPrep.

Is Swap Two Numbers associated with Google?

FastPrep tags this as a Google phone screen coding practice problem when the problem catalog has that company and stage context.

Problem · Array

● Easy

GoogleINTERNPHONE SCREEN

Given two integers first and second, return a two-element array containing their values after they are swapped.

The returned array must be [second, first]. You may use ordinary temporary storage; no arithmetic-only or bitwise-only technique is required.

swapNumbers(first: int, second: int) → int[]

first = 7second = -3return = [-3,7]

The second value becomes the first element, and the first value becomes the second element.

first = 5second = 5return = [5,5]

Equal values remain equal after their positions are exchanged.

first = -1000000000second = 1000000000return = [1000000000,-1000000000]

The operation simply reverses the two boundary values without arithmetic.