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UGC NET Computer Science Dec 2022 Shift I (Paper II)

The precedence of regular expression operators from lowest to highest precedence is:

Solution

In regular expressions, operator precedence from highest to lowest is:

$Star > Concatenation > Union$

Therefore, from lowest to highest:

$Union < Concatenation < Star$

Correct option is:

$\boxed{(c)\ \text{Union, Concatenation, Star}}$

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