""" Purpose: introduce string slicing
"""

# Get string of choice
s = input( "Enter favorite pie: " )

# Get indices i and j
t = input( "Enter two indices i and j: " )

i, j = t.split()
i = int( i )
j = int( j )

# slicing operator: string[ index1:index2 ]
# the colon allows you to grab more than 1 character at a time
# getting positions is really important, so python made the [] operator for that purpose

# Get slices of s
slice1 = s[ i : j ]   # Substring starts at index i, ends at index j-1
slice2 = s[ i : ]     # Substring starts at index i, continues to end of string
slice3 = s[ : j ]     # Substring starts at index 0, ends at index j-1
slice4 = s[ : ]       # Substring equals the entire string

# GOTCHA: slicing is [inclusive:exclusive] , inclusive of the first index, but exclusive of the second

# Print results
print()
print( "s[ i : j ]:", slice1 )
print( "s[ i :   ]:", slice2 )
print( "s[   : j ]:", slice3 )
print( "s[   :   ]:", slice4 )

# second to last character in a string:
# n = len( s )
# last_index = n - 1
# second_to_last_index = n - 2
# second_to_last = s[second_to_last_index]

# when will we use this type of thing? all the time... this won't go away
# uses include parsing, breaking up lists, etc.

# there is a way to do almost everything using python... it's a very powerful language
# the way might not be one function/method/operator, but there is a way to do almost everything
# we have a lot of tools left to explore