# Avoid Syntax Errors in Software Engineering Interviews Aced (formerly Exponent) publishes a public search API over its indexed pages; the guide is at https://www.aced.io/agents/agent-access. Source: https://www.aced.io/blog/avoid-syntax-errors-in-interviews Source observed: 2026-11-05T00:47:07.160Z Last checked: 2026-11-05T00:47:07.16+00:00 Indexed: 2026-11-07T02:58:52.236+00:00 --- # The Single Coding Mistake Slowing You Down in Interviews? Syntax Errors. **Category:** [Software Engineering](https://www.aced.io/blog/tag/swe) **Author:** [Michelle Bui](https://www.linkedin.com/in/michelle-bui-is-a-princess/?ref=exponent-blog.ghost.io), a software engineer at Chime and former engineer at Google and Intuit. **Last updated:** a month ago We help candidates prepare for technical interviews through questions, guides, practice, coaching, and courses. This article explains how syntax errors consume limited interview time and gives a practice routine for reducing them. ## Why syntax errors matter Syntax errors slow you down. At home, error logs make missing semicolons and misspelled variables easy to correct. In a 30- or 45-minute coding interview, however, a few seconds can become a minute or five, and fixing one variable name can reveal several additional problems. If time is called before you test your code, your core logic may never be demonstrated. The article emphasizes that knowledge of recursion, BFS, DFS, or two-dimensional arrays is not enough if syntax problems prevent you from finishing the application. ## How to avoid syntax errors ### 1. Identify common interview data structures Practice initializing and accessing these structures in your chosen language: - list - one-dimensional array - map, also called a dictionary - set - queue - stack - two-dimensional array - tree For each structure, practice three access operations: - add or insert - remove - look up values The article describes this as 27 methods to learn and practice: three access methods across nine data structures. ### 2. Use a simple, quick coding setup Choose an environment that lets you start quickly: - Avoid installing a programming language during practice. - Avoid boilerplate setup such as creating a main function. - Focus on the data structures. - Use a terminal if you are comfortable with it. - Otherwise, use a free online coding editor that runs your code. Do not use an IDE or [code editor with autocomplete](https://analyticsindiamag.com/4-top-autocomplete-coding-tools-for-python-programmers/?ref=exponent-blog.ghost.io). Autocomplete suggests method names and is unavailable in a real interview, so practicing without it helps you recognize syntax independently. ### 3. Practice one data structure with working sample code Start with one data structure and practice how to initialize it, add values, remove values, and look up values. If you do not know the syntax, search for simple sample code. The article uses Java `List` examples found through searches for: - “How to Initialize List Java” - “How to add to list Java” - “How to remove from list Java” - “How to lookup item in list Java” The article links to [sample code for Java](https://www.aced.io/blog/top-node-js-interview-questions?ref=exponent-blog.ghost.io) and recommends choosing examples that are easy to follow and compile without errors. Search results may use different variable names, initialization styles, or data types such as strings and integers; matching every example is not the immediate goal. Start practicing with code that compiles, then repeatedly type it character by character until the method names and syntax become familiar. Informative sample-code images from the article: ![Java list initialization sample](https://storage.ghost.io/c/a5/f5/a5f5c2f0-4c62-43c7-891b-662a0b6d68b3/content/images/pmlesson/2022/02/Screen-Shot-2022-02-11-at-11.52.28-AM.png) ![Full Java list example](https://storage.ghost.io/c/a5/f5/a5f5c2f0-4c62-43c7-891b-662a0b6d68b3/content/images/pmlesson/2022/02/Screen-Shot-2022-02-11-at-11.53.31-AM-1.png) ![Adding to a Java list sample](https://storage.ghost.io/c/a5/f5/a5f5c2f0-4c62-43c7-891b-662a0b6d68b3/content/images/pmlesson/2022/02/Screen-Shot-2022-02-11-at-11.54.32-AM.png) ![Removing from a Java list sample](https://storage.ghost.io/c/a5/f5/a5f5c2f0-4c62-43c7-891b-662a0b6d68b3/content/images/pmlesson/2022/02/Screen-Shot-2022-02-11-at-11.55.08-AM.png) ![Looking up an item in a Java list sample](https://storage.ghost.io/c/a5/f5/a5f5c2f0-4c62-43c7-891b-662a0b6d68b3/content/images/pmlesson/2022/02/Screen-Shot-2022-02-11-at-11.58.43-AM.png) The article also links to resources about [initializing a data structure](https://stackoverflow.com/questions/330793/how-to-initialize-a-struct-in-accordance-with-c-programming-language-standards?ref=exponent-blog.ghost.io), [recursion](https://www.cs.utah.edu/~germain/PPS/Topics/recursion.html?ref=exponent-blog.ghost.io), and [two-dimensional arrays](https://processing.org/tutorials/2darray?ref=exponent-blog.ghost.io). ### 4. Test yourself without the example After practicing with the sample, remove it and write the code from memory. Repeat initialization and the practiced operations: - add - remove - delete data from the structure Continue until the code compiles cleanly. Then solve practice problems, beginning with easy problems and progressing to harder ones. Notice whether syntax errors increase as the problem requires more concentration. ## Common syntax problems The article identifies these frequent issues: - missing semicolons - misspelled variable names - calling a method by the wrong name We recommend spending interview time explaining logic and algorithms rather than correcting avoidable syntax errors. Michelle Bui says she has conducted more than 1,000 coding interviews and that syntax errors are the most common mistake she sees. ## Software Engineering Interview Resources We provide additional preparation resources: - Practice with [Software Engineer interview questions](https://www.aced.io/questions?role=swe&ref=exponent-blog.ghost.io). - Read our Software Engineering [interview guides](https://www.aced.io/guides?role=software-engineering&ref=exponent-blog.ghost.io). - Rehearse behavioral and interpersonal skills with our [interview practice tool](https://www.aced.io/practice?ref=exponent-blog.ghost.io). - Take our complete Software Engineering [interview course](https://www.aced.io/courses/software-engineering?src=nav&ref=exponent-blog.ghost.io). - [Browse software engineer interview questions](https://www.aced.io/questions?role=swe&src=blog), including recently asked questions and answers from real candidates. - [Book time with a Software Engineer coach](https://www.aced.io/coaching?role=swe) for mock interviews, career coaching, or resume review. [Browse coaches](https://www.aced.io/coaching?role=swe&src=blog). We describe Aced as a tech interview preparation platform with free interview guides, insider tips, and courses. The article invites readers to [create a free account](https://www.aced.io/signup?src=blog) and states a 96% rating from 5,400 reviews. ## Related Courses ### [Software Engineering Interview Prep Course](https://www.aced.io/courses/software-engineering) **5 courses · 41,700 students** Prepare for software engineering roles at Google, Amazon, Microsoft, Meta, Apple, and other companies with mock interviews, frameworks, and advice from senior candidates. Topics include data structures, algorithms, system design, people management, behavioral interviews, and more. ### [Amazon Software Development Engineer (SDE) Interview Course](https://www.aced.io/courses/amazon-sde-interview) **5 courses · 4,600 students** Review data structures, algorithms, and system design principles through detailed questions and mock interviews focused on Amazon’s leadership principles. ## Related Blog Posts - [Software Engineer Interview Cheat Sheet: Tips, Tricks and Advice](https://www.aced.io/blog/software-engineer-interview-cheat-sheet) — a month ago · 12 min read - [How to Ace a Code Review Interview](https://www.aced.io/blog/how-to-ace-a-code-review) — a month ago · 8 min read - [How 12 Top Tech Companies Interview Software Engineers](https://www.aced.io/blog/how-top-tech-companies-interview-software-engineers) — a month ago · 12 min read - [The Top 30 Engineering Manager Interview Questions of 2022](https://www.aced.io/blog/top-30-engineering-manager-interview-questions) — a month ago · 8 min read ## Other preparation areas Our navigation includes courses and resources for Product Management, Forward Deployed Engineering, Engineering Management, Software Engineering, System Design, Data Science, Machine Learning, Data Engineering, AI Engineering, Investment Banking, Generative AI, Security Engineering, TPM, Solutions Architect, UX / Product Design, and BizOps & Strategy. 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