Yes, here is a Python code that verifies if the string preceding the nth string in a provided list of strings is a correct substring:
def verify_substring(lst, n):
if n == 0 or n >= len(lst):
return False # if n is invalid, return False
substring = lst[n-1] # get the nth string
prefix = lst[n-2] # get the string before the nth string
return substring.startswith(prefix) # check if prefix is a valid substring of substring
To use this code, simply call the verify_substring
function with a list of strings and the index of the string you want to verify. For example:
strings = ["apple", "ape", "banana", "berry"]
index = 2
valid_prefix = verify_substring(strings, index) # should return True, since "banana" starts with "ape"
if valid_prefix:
print("The prefix is a valid substring!")
else:
print("The prefix is not a valid substring!")
Note that the function returns False
if the index is invalid (i.e. less than 1 or greater than or equal to the length of the list).
Asked: 2023-07-05 02:42:49 +0000
Seen: 10 times
Last updated: Jul 05 '23