# function to find if a letter is in a string
#
# Jay Summet (GaTech)
#
# Example string programs.

def letterInString(aLetter, aString):

    index = 0


    while( index < len(aString) ):
       currentLetter = aString[index]
       
       if (currentLetter == aLetter):
         return True

       index = index + 1


    return False

    
def letterInString2(aLetter, aString):

    for currentLetter in aString:
       if (currentLetter == aLetter):
         return True
        
    return False




#Return the POSITION of the first aLetter in aString. If the letter is
# not in the string, return -1
def findInString(aLetter, aString):

    index = 0


    while( index < len(aString) ):
       currentLetter = aString[index]
       
       if (currentLetter == aLetter):
         return index

       index = index + 1


    return -1

    
def findInString2(aLetter, aString):

    index = 0
    
    for currentLetter in aString:
       
       if (currentLetter == aLetter):
         return index
        
       index = index + 1

       
        
    return -1