wocagav's blog

By wocagav, history, 2 months ago, In English

How to solve below problem statement.

given a string s which contains only curly braces and questions was what is the minimum number of operations to become it valid expression and return corrected string. There are three operations:

insert { or } in any position

delete { or } in any position. flip any position so { change by } or vice versa.

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