Question

In regex, explain the set of all bit strings that contain exactly one 1.

Answer 1

The set of all bit strings that contain exactly one 1 can be represented in regex using the pattern [01] *1[01] *.

Step-by-step explanation:

In regex, you can use the pattern [01] *1[01] * to represent the set of all bit strings that contain exactly one 1.

Let's break down the pattern:

• [01] * matches any number of 0s or 1s.
• 1 matches the single 1 that must be present.
• [01] * matches any number of 0s or 1s after the initial 1.

For example, this pattern would match strings like "0101" or "1001", but not "0001" or "1110".