Daily Coding Problem: Problem #955 [Easy]

Good morning! Here's your coding interview problem for today.

This problem was asked by Microsoft.

Suppose an arithmetic expression is given as a binary tree. Each leaf is an integer and each internal node is one of '+', '−', '∗', or '/'.

Given the root to such a tree, write a function to evaluate it.

For example, given the following tree:

    *
   / \
  +    +
 / \  / \
3  2  4  5

You should return 45, as it is (3 + 2) * (4 + 5).

Upgrade to premium and get in-depth solutions to every problem, including this one. Since you were referred by one of our affiliates, you'll get a 10% discount on checkout!

If you liked this problem, feel free to forward it along so they can subscribe here! As always, shoot us an email if there's anything we can help with!

Practice makes perfect. Book a mock interview with a FAANG-level interviewer today from our friends at Exponent (10% off!).

System design interviews are becoming more popular in SWE interviews. Here's how to prepare.

No more? Snooze or unsubscribe.