Leetcode (10) Evaluate Reverse Polish Notation (计算逆波兰表示法多项式)
题目描述EvaluatethevalueofanarithmeticexpressioninReversePolishNotation.Validoperatorsare+,-,*,/.Eachoperandmaybeanintegeroranotherexpression.Someexamples:[“2”,“1”,“+”,“3”,““]->((2+1)3)->9[“4”,“13”,“5”,“/