Zoom Coding Interview Questions
20 Zoom coding interview problems with full optimal solutions — 20 easy, 0 medium, 0 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an Zoom interviewer values, and a FAQ section.
Showing 20 problems of 20
- #1easyfoundational
1. Two Sum
Find two indices in an array whose values sum to a target.
- #2easyfoundational
2. Valid Parentheses
Determine if a string of brackets is properly nested and closed.
- #3easyfoundational
3. Merge Two Sorted Lists
Merge two sorted linked lists into one sorted list.
- #4easyfoundational
4. Remove Duplicates from Sorted Array
Remove duplicates in-place from a sorted array so each element appears once.
- #5easyfoundational
5. Remove Element
Remove all instances of a value in-place and return the new length.
- #6easyfoundational
6. Search Insert Position
Find the index where a target is or where it should be inserted.
- #7easyfoundational
7. Plus One
Increment a large integer represented as a digit array by one.
- #8easyfoundational
8. Merge Sorted Array
Merge two sorted arrays into the first array in-place.
- #9easyfoundational
9. Binary Tree Inorder Traversal
Return the inorder traversal of a binary tree's node values.
- #10easyfoundational
10. Same Tree
Check whether two binary trees are structurally and value-identical.
- #11easyfoundational
11. Symmetric Tree
Determine if a binary tree is a mirror of itself.
- #12easyfoundational
12. Maximum Depth of Binary Tree
Find the maximum depth of a binary tree.
- #13easyfoundational
13. Balanced Binary Tree
Determine if a binary tree is height-balanced.
- #14easyfoundational
14. Minimum Depth of Binary Tree
Find the minimum depth from root to the nearest leaf.
- #15easyfoundational
15. Pascal's Triangle
Generate the first numRows of Pascal's triangle.
- #16easyfoundational
16. Best Time to Buy and Sell Stock
Find the maximum profit from a single buy-and-sell of a stock.
- #17easyfoundational
17. Valid Palindrome
Determine if a string is a palindrome considering only alphanumerics.
- #18easyfoundational
18. Single Number
Find the element appearing once when all others appear twice.
- #19easyfoundational
19. Linked List Cycle
Detect whether a linked list contains a cycle.
- #20easyfoundational
20. Min Stack
Design a stack supporting push, pop, top, and getMin all in O(1).