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Which of the following is/are Bottom-Up Parser(s)?

1. Shift-reduce Parser
2. Predictive Parser
3. LL(1) Parser
4. LR Parser

Correct answer: Shift-reduce Parser

Solution

The Shift-reduce Parser is a type of bottom-up parser that builds the parse tree from the leaves (input symbols) up to the root (start symbol) by shifting input symbols onto a stack and reducing them to non-terminals according to production rules.

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