专项学习：软件开发

数据结构

（一）、字符串

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当是数字的时候直接入栈

当是运算符号的时候

就将栈的最上面两个数拿出进行运算 后 再将结果进栈 记住（栈顶元素永远在运算符号的右边）

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（二）、数组

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（三）、树

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（四）、队列

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（五）、栈

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（六）、链表

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（七）、堆

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（八）、图

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