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What will be the output of the following code snippet?
sentence = "The quick brown fox jumps over the lazy dog"
print(sentence.find("fox"))
A) 4
B) 10
C) 16
D) -1
Answer:
Answer by student
C) 16
Detailed answer by teachoo
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Let’s look at each line of the code and see what it does.
- sentence = “The quick brown fox jumps over the lazy dog” : This assigns the string “The quick brown fox jumps over the lazy dog” to the variable sentence. The string has 43 characters, including spaces and punctuation marks. Each character has an index, which is a number that represents its position in the string. The index starts from 0 for the first character and goes up to 42 for the last character. For example, the index of “T” is 0, the index of “e” is 1, and the index of “g” is 42.
- print(sentence.find(“fox”)) : This calls the find() method on the string sentence and prints its return value to the output. The find() method takes a substring as an argument and returns the lowest index of the substring if it is found in the string. If the substring is not found, it returns -1. In this case, the substring is “fox”, which is found in the string sentence at index 16. So, the find() method returns 16 and prints it to the output.
Let’s look at each of the options and see why they are correct or incorrect.
- A) 4 : This is incorrect , as it does not match the output of the code. The index of “fox” is not 4, but 16.
- B) 10 : This is incorrect , as it does not match the output of the code. The index of “fox” is not 10, but 16.
- C) 16 : This is the correct option, as it matches the output of the code. The index of “fox” is 16, which is returned by the find() method and printed to the output.
- D) -1 : This is incorrect , as it does not match the output of the code. The find() method returns -1 only if the substring is not found in the string. In this case, the substring “fox” is found in the string sentence, so it does not return -1.
So, the correct answer is C) 16
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