Assuming the following regex pattern "^[S][a-z]{2}" and input string"Smart Connected Systems Solutions"
What is the results of the matching?

Question

BlackTom AI · Accepted Answer

Consider the given regex pattern and the input string carefully, paying attention to anchors and character classes.
The pattern is ^[S][a-z]{2}:
- ^ asserts that the match must start at the beginning of the string.
- [S] matches the literal capital letter S.
- [a-z]{2} requires exactly two lowercase letters in a row.
Now, examine the input string: "Smart Connected Systems Solutions". At the very start, the characters are 'S', 'm', 'a', ... . The sequence starting at position 0 is 'S', followed by 'm' and 'a', which fits the two lowercase letters after S.
Therefore, the substring that satisfies the pattern at the start of the string is "Sma".
Evaluating the provided answer choices:
- No Match: Incorrect, because there is a valid match at the beginning of the string as explained.
- Sma: Correct, since 'Sma' is exactly the two lowercase letters following the initial 'S' and the start anchor is satisfied.
- Sol: Incorrect, because although it starts with 'So', the third character is 'l' but the pattern requires the two characters after 'S' to be lowercase letters, which would be 'ma' in the first three characters; 'Sol' does not align with the first three characters of the string.
- Sys: Incorrect for the same reason as above; the first three characters after 'S' would need to be 'ma' to match, not 'ys'.
In summary, only the substring "Sma" fulfills the entire regex at the start of the string, so among the options given, Sma is the valid match.

Assuming the following regex pattern "^[S][a-z]{2}" and input string"Smart Connected Systems Solutions" What is the results of the matching?

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