The language is expressive enough to represent a wide variety of string manipulation tasks that end-users struggle with. We describe an algorithm based on several novel concepts for synthesizing a ...

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Sabine Hyland receives funding from the British Academy, the British Museum, the National Endowment for the Humanities (USA), the John Simon Guggenheim Foundation, the Leverhulme Trust, and the ...

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Given a string s containing only three types of characters: '(', ')' and '*', return true if s is valid. The following rules define a valid string: * Any left parenthesis '(' must have a corresponding ...

A parentheses string is valid if and only if: It is the empty string, It can be written as AB (A concatenated with B), where A and B are valid strings, or It can be written as (A), where A is a valid ...