geekxh/hello-algorithm

hello-algorithm is a comprehensive algorithm training resource aimed at beginners who are preparing for technical job interviews, particularly at major tech companies. The project is primarily written in Chinese and targets Chinese-speaking developers. It addresses the common challenge that many people find algorithm and data structure problems intimidating when starting out, especially without a structured learning path. The repository is organized into four main sections. The first covers algorithm fundamentals with visual explanations of data structures like linked lists, trees, graphs, stacks, queues, and hash tables. The second section provides illustrated solutions to classic LeetCode problems, LeetCode is a popular platform where companies like Google and Amazon draw their interview questions from. The third section collects interview questions and experiences from top tech companies. The fourth section contains over a hundred technology concept mind maps covering broader computer science knowledge. The approach focuses on visual, diagram-based learning rather than dry theory, making it more accessible to people who learn better from pictures than from text-heavy explanations. Solutions are implemented in Java, and the project also offers downloadable PDF versions of the content for offline use. Someone would use this repository when preparing for a software engineering job interview, particularly if they are a beginner or intermediate developer who finds algorithm problems difficult to approach. It is especially relevant for those targeting roles at well-known tech companies that emphasize coding challenges. The primary language is Java, and no special runtime beyond a Java environment is needed to study or run the example code.