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Update Readme.md
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### 227.Basic-Calculator-II
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本题的思想是,将所有涉及到加法和减法的操作数都直接放入,遇到乘法和除法的操作,就直接在
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本题因为不涉及到括号,反而更加好做。思想是,将所有涉及到加法和减法的操作数都直接加入数组。遇到乘法和除法的操作,就直接改变数组的最后一个元素。最终把数组内的所有元素相加即可。

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