Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Which of the following option is/are false?a)...
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Which of the following option is/are false?
- a)Most frequent operation on symbol table is insert operation.
- b)Symbol table data is filled by the lexical analyzer and syntax analyzer.
- c)Efficient implementation of symbol table among, an ordered list, unordered list, and binary search tree is ordered list.
- d)All of these
Correct answer is option 'A,C'. Can you explain this answer?
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Most Upvoted Answer
Which of the following option is/are false?a)Most frequent operation o...
Understanding Symbol Tables
Symbol tables are crucial data structures used in compilers and interpreters to store information about identifiers, such as variable names, function names, and scopes.
False Options Explained
A. Most frequent operation on symbol table is insert operation.
- This statement is false because while insertion is an important operation, lookup (searching for an identifier) is typically more frequent. Compilers need to frequently check if an identifier is already defined or to retrieve its associated information.
C. Efficient implementation of symbol table among an ordered list, unordered list, and binary search tree is ordered list.
- This statement is also false. An unordered list allows for faster insertions but slower lookups, while an ordered list offers efficient searching but slower insertions. A binary search tree provides a balanced approach, allowing for both efficient insertions and lookups, especially if it is balanced. Thus, the binary search tree is often considered more efficient overall for symbol table implementation.
True Options Explained
B. Symbol table data is filled by the lexical analyzer and syntax analyzer.
- This statement is true. The lexical analyzer populates the symbol table with tokens and their attributes, while the syntax analyzer ensures correct usage and relationships between these symbols during parsing.
Conclusion
In summary, options A and C are false due to the nature of operations performed on symbol tables and their implementations. Understanding these nuances is essential for effective compiler design and optimization.
Symbol tables are crucial data structures used in compilers and interpreters to store information about identifiers, such as variable names, function names, and scopes.
False Options Explained
A. Most frequent operation on symbol table is insert operation.
- This statement is false because while insertion is an important operation, lookup (searching for an identifier) is typically more frequent. Compilers need to frequently check if an identifier is already defined or to retrieve its associated information.
C. Efficient implementation of symbol table among an ordered list, unordered list, and binary search tree is ordered list.
- This statement is also false. An unordered list allows for faster insertions but slower lookups, while an ordered list offers efficient searching but slower insertions. A binary search tree provides a balanced approach, allowing for both efficient insertions and lookups, especially if it is balanced. Thus, the binary search tree is often considered more efficient overall for symbol table implementation.
True Options Explained
B. Symbol table data is filled by the lexical analyzer and syntax analyzer.
- This statement is true. The lexical analyzer populates the symbol table with tokens and their attributes, while the syntax analyzer ensures correct usage and relationships between these symbols during parsing.
Conclusion
In summary, options A and C are false due to the nature of operations performed on symbol tables and their implementations. Understanding these nuances is essential for effective compiler design and optimization.
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Community Answer
Which of the following option is/are false?a)Most frequent operation o...
Option (A): Most frequent operation on the symbol table is insert operation.
This is false statement since the most frequent operation on the symbol table is the lookup operation.
Option (B): Symbol table data is filled by the lexical analyzer and syntax analyzer.
This is a true statement since symbol table data is filled by the lexical analyzer and syntax analyzer.
Option (C): Efficient implementation of symbol table among, an ordered list, unordered list, and binary search tree is ordered list.
This is false statement since the efficient implementation of a symbol table among, an ordered list ( insert - O(n), lookup- O(logn) ), unordered list ( insert - O(1), look up - O(n) ), and binary search tree ( insert - O(logn), lookup - O(logn)) is a binary search tree.
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Which of the following option is/are false?a)Most frequent operation on symbol table is insert operation.b)Symbol table data is filled by the lexical analyzer and syntax analyzer.c)Efficient implementation of symbol table among, an ordered list, unordered list, and binary search tree is ordered list.d)All of theseCorrect answer is option 'A,C'. Can you explain this answer?
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