# s="welcome to java class"
# 
# k = s.islower()
# print(k)
# o = s.isupper()
# print(o)
# b = s.endswith("Class")
# print(b)
# b = s.endswith("class")
# print(b)
#
# le = s.__len__()
# print(le)
# c = s.count("o")
# print(c)
# o = s.count("o", 0, 5)
# print(o)
# b = s.startswith("Wel")
# print(b)
# b = s.startswith("wel")
# print(b)
# i = s.upper()
# print(i)
# lo = s.lower()
# print(lo)
# f = s.find("t")
# print(f)
# k = s.find("z")
# print(k)
# u = s.rfind("o")
# print(u)
# i = s.index("o")
# print(i)
# k = s.index("to")
# print(k)
# l = s.index("z")
# print(l)

# s1 = s.split("a")
# print(s1)
#
# for i in s1:
#     print(i)
# print(s1[0])
# print(s1[2:])

# print(s,2)
# print(s.lstrip())
# print(s.rstrip(),2)
# print(s.strip(),2)
# print(s.capitalize())

# print(s+" to green tech")
# print(s+" 2020")
# print(s, 2020)
# print(s*3)

# print(s[1:])
# print(s[:5])
# print(s[2:5])
# print(s[:-5])
# print(s[-2:])
# print(s[-5:-2])
# print(s[-2:-5])