subjects = ["C", "Java", "Kotlin", "Python", "Android", "C++", "Dart", "Fluter"]

#all print.
print(subjects)

#one index print
print(subjects[0])

#start to 2 num index with all list of print out
print(subjects[2:])

#last index  print out
print(subjects[-1])

# check to Java in list return true other -false - in operator.
print("Java" in subjects)

# check to JSON in list if don't find return -true - not in ooperator.
print("JSON" not in subjects )

#list adding system with two times..
print(subjects+["MySQL ,Firebase, Jetpack",2])

#list  3 type print system
print(subjects *3)
