How should I practice Pair Left and Right Shoes by Size?

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

Is Pair Left and Right Shoes by Size associated with Motive?

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

Pair Left and Right Shoes by Size

Motive● EasyFULLTIMEPHONE SCREEN

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Problem statement

A shoe rack contains left shoes and right shoes in various integer sizes. Given the sizes of every left shoe and every right shoe, return whether every shoe can be paired with exactly one opposite-side shoe of the same size.

Function

canPairShoes(leftSizes: int[], rightSizes: int[]) → boolean

Examples

Example 1

leftSizes = [7,8,7]rightSizes = [7,7,8]return = true

Every left shoe has one right shoe of the same size.

Example 2

leftSizes = [6,6]rightSizes = [6,7]return = false

One left size-6 shoe and the right size-7 shoe remain unmatched.

Constraints

0 <= leftSizes.length, rightSizes.length <= 100000.
1 <= size <= 1000000000.