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This article is about how leetcode implements basic calculators. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

I. the content of the topic

Implement a basic calculator to calculate the value of a simple string expression s.

Example 1:

Enter: s = "1 + 1"

Output: 2

Example 2:

Enter: s = "2-1 + 2"

Output: 3

Example 3:

Enter: s = "(1 + (4: 5)-3) + (6: 8)"

Output: 23

Tip:

one

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