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数组为什么是算法地基?从二分查找、双指针到前缀和全解析
C/C++里int a [10]就是裸的40字节内存,访问a [10]不报错但行为未定义,指针数组、多维数组这类概念必须自己心里有数;Python的list存的是对象引用,所以可以塞混合类型,代价是每个元素访问多一层间接跳转;JavaScript的Array是个打了补丁的容器,既能当栈又能当队列。
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