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What does common subexpression elimination achieve?
What does common subexpression elimination achieve?
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Practice Questions
1 question
Q1
What does common subexpression elimination achieve?
It reduces the number of variables
It eliminates duplicate calculations
It simplifies control flow
It increases the number of function calls
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Common subexpression elimination achieves the elimination of duplicate calculations, thus optimizing the code.
Questions & Step-by-step Solutions
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Q
Q: What does common subexpression elimination achieve?
Solution:
Common subexpression elimination achieves the elimination of duplicate calculations, thus optimizing the code.
Steps: 5
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Step 1: Identify calculations in the code that are repeated multiple times.
Step 2: Replace the repeated calculations with a single variable that stores the result.
Step 3: Use this variable wherever the original calculation was used.
Step 4: This reduces the number of calculations the program has to perform.
Step 5: As a result, the code runs faster and is more efficient.
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