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Write a function that takes an array of characters and reverses the letters in place.

Why an array of characters instead of a string?

The goal of this question is to practice manipulating arrays in place. Since Swift strings support unicode, a single character in a string might be multiple bytes. There's no way to get the ith character in a Swift string.

To sidestep this complexity, we'll work with arrays of characters instead, which let us quickly access characters at any offset.

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Actually, we don't support password-based login. Never have. Just the OAuth methods above. Why?

  1. It's easy and quick. No "reset password" flow. No password to forget.
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Start your free trial!

Log in or sign up with one click to get immediate access to free mock interview questions

Where do I enter my password?

Actually, we don't support password-based login. Never have. Just the OAuth methods above. Why?

  1. It's easy and quick. No "reset password" flow. No password to forget.
  2. It lets us avoid storing passwords that hackers could access and use to try to log into our users' email or bank accounts.
  3. It makes it harder for one person to share a paid Interview Cake account with multiple people.

time and space.

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