#!/usr/bin/env python3;
###############################################################################
# This program demonstrates basic string functions.
# 
# Copyright © 2020 Richard Lesh.  All rights reserved.
###############################################################################

# Begin Main
alphabet = "abcdefghijklmnopqrstuvwxyzabc"
greekAlphabet = "αβγδεζηθικλμνξοπρσςτυφχψωαβγ"
emoji = "😃😇🥰🤪🤑😴🤒🥵🥶🤯🥳😎😥😱😡🤬💀👽🤖😺🙈🙉🙊😃😇🥰"

print("Length: " + str(len(alphabet)))
print("charAt(17): " + str(alphabet[17]))
print("codePointAt(17): " + str(ord(alphabet[17])))
print("substr(23, 26): " + alphabet[23:26])
print("prefix(6): " + alphabet[0:6])
print("right_tail(6): " + alphabet[6:])
print("suffix(6): " + alphabet[len(alphabet) - 6:])
print("find(\'def\'): " + str(alphabet.find("def")))
print("find(\'def\') is not found: " + str((alphabet.find("def") == -1)))
print("find(\'bug\'): " + str(alphabet.find("bug")))
print("find(\'bug\') is not found: " + str((alphabet.find("bug") == -1)))
print("rfind(\'abc\'): " + str(alphabet.rfind("abc")))
print("rfind(\'abc\') is not found: " + str((alphabet.rfind("abc") == -1)))
print("rfind(\'bug\'): " + str(alphabet.rfind("bug")))
print("rfind(\'bug\') is not found: " + str((alphabet.rfind("bug") == -1)))

print("Length: " + str(len(greekAlphabet)))
print("charAt(17): " + str(greekAlphabet[17]))
print("codePointAt(17): " + str(ord(greekAlphabet[17])))
print("substr(23, 26): " + greekAlphabet[23:26])
print("prefix(6): " + greekAlphabet[0:6])
print("right_tail(6): " + greekAlphabet[6:])
print("suffix(6): " + greekAlphabet[len(greekAlphabet) - 6:])
print("find(\'δεζ\'): " + str(greekAlphabet.find("δεζ")))
print("find(\'δεζ\') is not found: " + str((greekAlphabet.find("δεζ") == -1)))
print("find(\'bug\'): " + str(greekAlphabet.find("bug")))
print("find(\'bug\') is not found: " + str((greekAlphabet.find("bug") == -1)))
print("rfind(\'αβγ\'): " + str(greekAlphabet.rfind("αβγ")))
print("rfind(\'αβγ\') is not found: " + str((greekAlphabet.rfind("αβγ") == -1)))
print("rfind(\'bug\'): " + str(greekAlphabet.rfind("bug")))
print("rfind(\'bug\') is not found: " + str((greekAlphabet.rfind("bug") == -1)))

print("Length: " + str(len(emoji)))
print("charAt(16): " + str(emoji[16]))
print("codePointAt(16): " + str(ord(emoji[16])))
print("substr(20, 24): " + emoji[20:24])
print("prefix(6): " + emoji[0:6])
print("right_tail(6): " + emoji[6:])
print("suffix(6): " + emoji[len(emoji) - 6:])
print("find(\'😱😡🤬\'): " + str(emoji.find("😱😡🤬")))
print("find(\'😱😡🤬\') is not found: " + str((emoji.find("😱😡🤬") == -1)))
print("find(\'bug\'): " + str(emoji.find("bug")))
print("find(\'bug\') is not found: " + str((emoji.find("bug") == -1)))
print("rfind(\'😃😇🥰\'): " + str(emoji.rfind("😃😇🥰")))
print("rfind(\'😃😇🥰\') is not found: " + str((emoji.rfind("😃😇🥰") == -1)))
print("rfind(\'bug\'): " + str(emoji.rfind("bug")))
print("rfind(\'bug\') is not found: " + str((emoji.rfind("bug") == -1)))