# Str07.py
a1 = 'Welcome to Korea Education'

print(a1[0::2])
print(a1[-9:])
print(a1[-9::2])
print(a1[::-1])

print('abc' < 'abd')
print('ab' < 'ba')
print('a' < 'A')
print('가' > '황')

print(a1.startswith('We'))
print(a1.endswith('on'))
print(a1.upper())
print(a1.lower())
print('Korea' in a1)
print('Korea' not in a1)

print(a1.count('e'))
print(a1.find('e'))
print(a1.replace('e','z',1))
