''' Purpose: separately prompt for a string s and a list of integers numbers.
    The program displays the string formed by using numbers as indices into s.
'''

# get the string of interest for examination
s = input( "Enter a string: "  ) # "computer"

# get the numeric inputs
reply = input( "Enter indices: " ) # "5 1 7"

string_sequence = reply.split() # ["5","1","7"] reply.split() broke it
# up into a list of smaller substrings!

# accumulate from the numeric inputs a list of integer indices.
indices = [] # Create a list of numbers for our indices (accumulator)
for ns in string_sequence:
    i = int( ns ) # Convert each numeric string to a number
    indices.append( i ) # Add number versions of each number to list!

print( indices )# Yay! We got our list of numbers for the indices
# we wanted by converting the numeric strings in string_sequence to
# a list of numbers of those same numeric strings but as integers
# so that we can work with the numbers.

# acccumulate output string by using the indices one-at-a-time to look into s
output_string = "" # String accumulator to build up a string
# of my characters at those indices of interest
for i in indices: # [5,1,7]
    character = s[ i ] # This is getting the character at that index
    # THIS IS CALLED SUBSCRIPTING -> get me character at this number position!
    # s[ 5 ] in 'computer' is 't'
    print( character )
    output_string = output_string + character # Build up final string

print()
print( output_string )