Okta LeetCode Questions: What to Practice for the Coding Round
Okta coding rounds sit mostly at easy to medium difficulty, not hard. Candidates report arrays, hash maps, strings, trees and graph search as the common topics, with an occasional SQL question.
Okta does not publish its questions. The list below is built from the topics candidates report, so use it as practice, not as leaked content.
Candidates also report an online assessment before the live rounds, often on a hosted platform such as CodeSignal or HackerRank. It usually gives two problems and a fixed timer.
Practice List by Topic
| Topic | Practice problems |
|---|---|
| Arrays and hash maps | Two Sum, Group Anagrams, Top K Frequent Elements |
| Strings | Longest Substring Without Repeating Characters, Valid Parentheses, Validate IP Address |
| Two pointers and sliding window | Container With Most Water, Minimum Window Substring |
| Sorting and searching | Search in Rotated Sorted Array, Kth Largest Element in an Array |
| Intervals | Merge Intervals, Meeting Rooms |
| Trees | Lowest Common Ancestor of a Binary Tree, Level Order Traversal |
| Graphs | Number of Islands, Course Schedule, Clone Graph |
| Design in code | LRU Cache, Logger Rate Limiter, Design HashMap |
| Dynamic programming | Climbing Stairs, Coin Change, Longest Increasing Subsequence |
| SQL | Combine Two Tables, Game Play Analysis |
Start with the first four rows. They cover the largest share of what candidates report.
Where to Put Your Time
If you have two weeks, split it like this.
- Days one to four. Arrays, hash maps and strings. These appear in almost every screen.
- Days five to seven. Trees and graph search. Breadth first search and depth first search, written from memory.
- Days eight to ten. Design in code, such as an LRU cache or a rate limiter. These fit Okta's product well.
- Days eleven to fourteen. Timed practice. Two problems in 60 to 90 minutes, no hints.
Why Rate Limiters and Caches Come Up
Okta sells identity and access management. That means single sign-on, multi-factor login and user directories delivered as a service.
Those systems throttle requests, cache lookups and expire sessions. Questions that mirror that work are natural choices for an interviewer.
Practice three small designs in code.
- A rate limiter. Allow a set number of requests per user per minute. Then handle several servers.
- An LRU cache. Get and put in constant time, with the oldest entry removed first.
- A token store with expiry. Insert with a lifetime, then read only unexpired entries.
Each one is a class with two or three methods. Write them until you can do it without looking.
How the Rounds Run
| Stage | Length | What happens |
|---|---|---|
| Recruiter call | 30 minutes | Background, level, timing |
| Online assessment | 60 to 90 minutes | Two problems, reported as CodeSignal or similar |
| Technical screen | 45 to 60 minutes | One problem in a shared editor |
| Onsite | Several rounds | Coding, design, and behavioral rounds |
Round counts change by team and level. Ask your recruiter for the exact loop before you plan your study time.
Mistakes to Avoid
- Grinding hard problems. Candidates report easy and medium levels. Depth on medium beats a few hard solutions.
- Coding in silence. State the approach and the running time before you type.
- Skipping edge cases. Empty input, one element, duplicates. Say them out loud.
- Ignoring SQL. Some roles include a query. One hour on joins and grouping is enough.
- No identity knowledge at all. You do not need to be an expert. You should be able to explain single sign-on in one sentence.
How to Prepare
- Learn the patterns, not the problem list. Grokking the Coding Interview groups problems by the technique that solves them, which transfers to new questions.
- Use a short high-value set. Grokking 75 Top Coding Interview Questions covers the topics above in a fixed list.
- Fix weak data structures early. Grokking Data Structures for Coding Interviews covers heaps, maps and trees.
- Read the other company pages. See which Okta coding interview questions to prepare and what Okta coding interview questions are asked.
- Prepare the design and story rounds. See what to expect in the Okta system design interview and top Okta behavioral interview questions.
- Do one timed rehearsal. A mock interview shows whether you can talk and code at the same time.
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