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yanglbme 提交于 2020-10-20 11:19 . docs: prettify code

16.26. Calculator

中文文档

Description

Given an arithmetic equation consisting of positive integers, +, -, * and / (no paren­theses), compute the result.

The expression string contains only non-negative integers, +, -, *, / operators and empty spaces . The integer division should truncate toward zero.

Example 1:


Input: "3+2*2"

Output: 7

Example 2:


Input: " 3/2 "

Output: 1

Example 3:


Input: " 3+5 / 2 "

Output: 5

Note:

  • You may assume that the given expression is always valid.
  • Do not use the eval built-in library function.

Solutions

Python3

Java

...

Java
1
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