infix, prefix, and postfix expressions 中缀前缀后缀表达式

Notations:
operators - 运算符
operands - 操作数

Example of each

precedence level of infix expressions

How to convert infix expression to prefix and postfix

(TBD…)

References
Infix, Prefix and Postfix Expressions - interactivepython.org
前缀、中缀、后缀表达式 - CSDN antineutrino