#A. Write a function called
#   lastIndexOf

#The function
# -takes a string and a character (one-character string) as parameters, and
# -finds and prints the last index of occurrence of the character in
#  the string. The function print -1 if the character doesn't
#  exist in the string.

def lastIndexOf(phrase,char):
    index=-1
    for i in range(len(phrase)):
        if phrase[i]==char:
            index=i
    print index

lastIndexOf("apple", "p")
lastIndexOf("apple", "b")

#B. Write a function
#    firstIndexOf
# that takes a string and a character (one-character string) as parameters,
# and finds and prints the first index of occurrence of the character
# in the string. Print -1 if the character doesn't exist in the string.

def firstIndexOf(phrase,char):
    index=-1
    for i in range(len(phrase)):
        if phrase[i]==char and index==-1:
            index=i
    print index