代码是指由计算机程序表示的指令序列，用于实现特定的功能或完成任务。它是一种高抽象、低级别的语言，可以被编译成可执行文件或解释器运行在不同的硬件平台上。代码通常包含注释和格式化风格，以便于人类阅读和维护。
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Lee what is code?
LeetCode is an online coding website that collects笔试 and interview questions from various IT companies around the world, making it a valuable resource for students preparing for job interviews.
This site has several advantages. It provides you with test data, allowing you to compare your output with the correct one, which helps you debug and learn more effectively. Currently, it supports C++ and Java (now supporting many more languages).
In addition, it offers an online editor, enabling you to directly view the running results of your code.
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