You should be prepared to write code or sketch out the solutions on a whiteboard if asked.Ģ.9 Remove duplicates from sorted list IIĢ.15 Flatten a multilevel doubly linked listĢ.19 Remove zero sum consecutive nodes from linked list Here are some moderate-level questions that are often asked in a video call or onsite interview. These questions are often asked during the "phone screen" stage, so you should be comfortable answering them without being able to write code or use a whiteboard.ġ.8 Convert binary number in a linked list to integerġ.11 Insert a node at the tail of a linked listġ.12 Insert a node at the head of a linked listġ.15 Inserting a node Into a sorted doubly linked listĢ. Here are some of the easiest questions you might get asked in a coding interview. Don’t get stuck in a loop of reading as many solutions as possible! We’ve analysed dozens of questions and selected ones that are commonly asked and have clear and high quality answers. If you get stuck, go ahead and look at the solutions, but then try the next one alone again. Begin by writing your own solution without external resources in a fixed amount of time. Instead, you should use these questions to practice the fundamental concepts of linked lists.Īs you consider each question, try to replicate the conditions you’ll encounter in your interview. Interviewers will always try to find new questions, or ones that are not available online. You might be tempted to try to read all of the possible questions and memorize the solutions, but this is not feasible. We explain how linked lists work, their variations, and the most important things you need to know about them, including a useful “cheat sheet” to remind you of the key points at a glance.Ĭlick here to practice coding interviews with ex-FAANG interviewers 1. Merge all the linked lists into one sorted linked list and return it.īelow, we take a look at some more questions and provide you with links to high quality solutions to them.
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