From 0ae9d1808cf4db850f28ad9cfa837506bfec9588 Mon Sep 17 00:00:00 2001 From: boom-jumper <56831966+boom-jumper@users.noreply.github.com> Date: Thu, 27 May 2021 20:37:53 +0800 Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A00150=E9=80=86=E6=B3=A2?= =?UTF-8?q?=E5=85=B0=E8=A1=A8=E8=BE=BE=E5=BC=8F=E6=B1=82=E5=80=BC=20python?= =?UTF-8?q?3=20=E7=89=88=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- problems/0150.逆波兰表达式求值.md | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/problems/0150.逆波兰表达式求值.md b/problems/0150.逆波兰表达式求值.md index e38bc1a3..c8b0da08 100644 --- a/problems/0150.逆波兰表达式求值.md +++ b/problems/0150.逆波兰表达式求值.md @@ -224,6 +224,22 @@ var evalRPN = function(tokens) { }; ``` +python3 + +```python +def evalRPN(tokens) -> int: + stack = list() + for i in range(len(tokens)): + if tokens[i] not in ["+", "-", "*", "/"]: + stack.append(tokens[i]) + else: + tmp1 = stack.pop() + tmp2 = stack.pop() + res = eval(tmp2+tokens[i]+tmp1) + stack.append(str(int(res))) + return stack[-1] +``` + ----------------------- * 作者微信:[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)