What are the valid indexes for the string ‘New York’?
Select one:
A. -1 through 6
B. -1 through -8
C. 0 through 7
D. 0 through 8
The correct answer and explanation is :
The correct answer is C. 0 through 7.
Explanation:
In Python, strings are indexed starting from 0 for positive indices, with negative indices counting backward from the end of the string.
Consider the string 'New York'. The string consists of 8 characters, which are:
'N' 'e' 'w' ' ' 'Y' 'o' 'r' 'k'For positive indices (0 through 7), the characters are indexed as follows:
- Index 0: ‘N’
- Index 1: ‘e’
- Index 2: ‘w’
- Index 3: ‘ ‘ (space)
- Index 4: ‘Y’
- Index 5: ‘o’
- Index 6: ‘r’
- Index 7: ‘k’
Thus, the valid indices for the string 'New York' using positive indexing range from 0 to 7.
For negative indices, Python starts counting from the last character of the string, which is at index -1, moving backward to the beginning of the string. For 'New York', the negative indices are:
- Index -1: ‘k’
- Index -2: ‘r’
- Index -3: ‘o’
- Index -4: ‘Y’
- Index -5: ‘ ‘ (space)
- Index -6: ‘w’
- Index -7: ‘e’
- Index -8: ‘N’
Thus, negative indices range from -1 to -8 for the string 'New York'.
The Index Range:
- Positive indices: 0 through 7 (8 characters total)
- Negative indices: -1 through -8 (same 8 characters, but in reverse order)
Given that the valid indices for the string 'New York' are 0 through 7 for positive indexing, the correct answer is C. 0 through 7.