Evaluate the value of an arithmetic expression in Reverse Polish Notation.
Valid operators are +, -, *, /.
Each operand may be an integer or another expression.
Some examples:
["2", "1", "+", "3", "*"] -> ((2 + 1) * 3) -> 9 ["4", "13", "5", "/", "+"] -> (4 + (13 / 5)) -> 6
java代码：
Evaluate Reverse Polish Notation,布布扣,bubuko.com
Evaluate Reverse Polish Notation
原文：http://blog.csdn.net/jingang_cq/article/details/37595735