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150. Evaluate Reverse Polish Notation - LeetCode

Question 150. Evaluate Reverse Polish Notation Solution 2 1 + 3 * 是((2+1)*3)的后缀(postfix)或逆波兰(reverse Polish)记法,计算这个表达式容易想到栈,当见到一个数时就入栈,见到操作符时该运算符作用于从该栈中弹出的两个数上,将所得结果入栈. public int evalRPN(String[] tokens) { Stack<Integer> stack = new Stack<>()…

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［抄题］: Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, /. Each operand may be an integer or another expression. Note: Division between two integers should truncate toward zero. The given RPN expr…

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