This book introduces various precautions, common question types and common answer techniques in programmer interviews. The interview examples in the book are all based on actual recruitment interview questions from Dingtong Computer Company, and each example is followed closely. Solution ideas and logical analysis steps. It not only helps job seekers quickly review relevant knowledge, but also provides guidance on interview techniques on how to leave a good and deep impression on the interviewer, which can help readers get a real high-paying job. This book is suitable for all programmers who are looking for a job or will be looking for a job.