print("String and methods")

# s1 = 'Hello Asif'

# s2 = "Hello Emon"

# s3 = """I am

# 24 years old"""

# print(s1,s2,s3)

# s4 = str(2443.4)

# print(s4,type(s4))

# print("Hi i am 30 year's old")

# print('Hlw How are "you"')

#accessing stings-indexing.slicing

s = "Hello Python"

# print(s[0])

# print(s[6])

# print(s[-1])

# print(s[len(s)-6])

# print(s[15])

#slicing

# print(s[::])

# print(s[::-1])

# print(s[0:6:2])

# print(s[1:5])

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

# print(s[-1::])

# print(s[-6:])

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

#editing and deleting strings

# s[0] ="A"

# s1 = s[0]

# print(s1)

# s2 = s[1:4]

# print(s2)

# del s[0]

# del s[0:5]

# del s

# print(s)

#operations on string

# print("Asif"+" "+"Arfi")

# print("Delhi"+ "Mumbai")

# print("Asif"*3)

# print("Asif"-23)

# print("*"*50)

# print("Asif">"Cinema")

# print("Emon">)

#relational operator

# print("Asif"=="Asif")

# print(12 == 12.00)

# print("Dhaka"!="dhaka")

# print("Asif">"Asif")

# print("Asif"<"Emon")

# print('qwer'>="1234")

# print("Asif" and "Afiya")

# print("" and "A")

# print("Asif" or 12)

# print(False and "Asif")

# print(not "")

# print(not "Asif")

# for i in "Hello World":

# print(i)

# s = "Asif is 24 years old"

# for i in range(0,len(s)):

# print(s[i])

#functions-len,min,max,sorted

s = "Hello Asif"

# print(len(s))

# print(max(s))

# print(min(s))

# print(max(''))

# print(sorted(s,reverse=True))

#more functions - capitalize,title,upper,lower,swapcase

s = "hello WoRld"

# print(s.capitalize())

# print(s.title())

# print(s.upper())

# print(s.lower())

# print(s.swapcase())

#count/index/find

# print(s.count('o'))

# print(s.count('l'))

# # print(s.index("7"))

# print(s.find('w'))

# print(s.find(''))

#find the length

# s = input("Enter a string:")

# count = 0

# for i in s:

# count +=1

# print(i)

# print("length is:",count)

# s = input('Enter email:')

# username = ""

# for i in s:

# if i =="@":

# break

# else:

# username +=i

# print("username:",username)

# s = input("enter a string:")

# c = input("enter a character:")

# count =0

# for x in s:

# if x == c:

# count +=1

# print(c," count:",count)

# s = input("enter the string:")

# c = input("enter the character to remove:")

# str1 = ""

# for x in s:

# if x ==c:

# continue

# else:

# str1+=x

# print("modified string:",str1)

#string revise

# s1 = 'Hello Asif'

# s2 = "Hello Python"

# s3 = """Hi

# i am asif"""

# print(s1,s2,s3)

# print("Hello I am 24 year's old")

# print('Hello "Probin ')

# s1 = str(2+3j)

# print(s1)

#accessing string - index,slicing

s1 = "Hello Bangladesh"

# print(s1[0])

# print(s1[-4])

# print(s1[len(s1)-3])

# print(s1[1:4])

# print(s1[::-1])

# print(s1[::])

# print(s1[:4])

# print(s1[-1:-5:-1])

#string is immutable - can't edit the string

s1 = "Hello Bangladesh"

# s1[0] = "As"

# print(s1)

# s1[1:3] = "Asif"

# print(s1[0])

# del s1[0]

# del s1

# print(s1)

#operations on string

#arithmetic - +/*

s1 = "Hello"

# print(s1*3)

# print(s1 + "Asif" + 23)

# print("Mumbai"+"Delhi")

# print("Asif"+"Asif")

#relational - <,<=,>=,>,==,!=

# print("Asif">"Himel")

# print("Asif"<"probin")

# print("Boss" == "Boss")

# print("Boss">"Asif")

# print("Asif"!="asif")

# print("Cat">"Catch")

# print("cat">"CAT")

#string formatting

# name = "Asif"

# age = 24

# print(f"My name is {name} and age is {age}")

# str1 ="My name is {} and age is {}".format(name,age)

# print(str1)

# print("Asif" and "Hasan" and "Probin")

# print("" and "Asif" and "9")

# print("Asif" or False)

# print("" or "AS")

# print(not "Asif")

# print(not "")

# for i in "Hello World":

# print(i)

# for i in range(1,11):

# print(f"Hello World {i}")

#membership operator - in,not in

# print("H" in "Hello")

# print("D" in "delhi")

# print("a" not in "Asif")

#common function - len,max,min,sorted

s1 = "hello world"

# print(len(s1))

# print(max(s1))

# print(min(s1))

# print(sorted(s1,reverse=True))

# print(s1.capitalize())

# print(s1.title())

# print(s1.upper())

# print(s1.lower())

# print(s1.swapcase())

# print(s1.count("o"))

#find the length of a given string

# s = input("Enter a string:")

# counter = 0

# for i in s:

# counter += 1

# print(f"length of string is : {counter}")

# email = input("Enter your email:")

#string revise

# str1 = 'Hello Asif'

# str2 = "Hello Python"

# str3 ="""Multiline

# string"""

# print(str1,str2,str3)

# print("Asif 's")

# print('Asif"ssf')

# str1 = str("Asif")

# print(str1)

s1 = "Hello Python"

# print(s1[4])

# print(s1[-4])

# print(s1[len(s1)-3])

#slicing - [::]

# print(s1[1:5])

# print(s1[::-1])

# print(s1[::])

# print(s1[:5])

# print(s1[-3:-5:-1])

#s1[0] ="A"

# s2 = s1[0:4]

# print(s2)

# s = "Asif"

# # del s[0]

# del s

# print(s)

#operations on string

# print("Asif"+" "+"Asif")

# print("Asif"*3)

# print("Asif">="asif")

# print("Dhaka"<"Pune")

# print("cat">"catch")

#print("Asif"=="asifa")

# print("Asif"and"Asifa")

# print("sif"and"")

# print("" and "Asif")

# print("Asif"or"Shifa")

#print(not 23)

# s1 = "Hello Asif"

# for i in s1:

# print(i)

#print("D" in "Deshi")

# print(12 and 23 and 34)

# print(23 and "" and 34)

#common functions-min,max,len,sorted

# s1 = "Hello Asif"

# print(len(s1))

# print(max(s1))

# print(min(s1))

# print(sorted(s1,reverse=True))

# s1 = "hello World"

# print(s1.capitalize())

# print(s1.upper())

# print(s1.lower())

# print(s1.title())

# print(s1.swapcase())

# s2 = "Hello Python"

# print(s2.swapcase())

# print(s2.lower())

# print(s2.upper())

# print(s2.title())

# print(s2.capitalize())

#string formatting- format,f-string

# name = "Asif"

# age = 25

# print("My name is {} and age is {}".format(name,age))

# print(f"My name is {name} and age is {age}")

#functions to check if a string meets a criteria

# s = "HelloWorld"

# print(s.isalnum())

# s = "!123Asif"

# print(s.isalnum())

# email = "haque.mdasif1501@gmail.com"

# username =""

# for i in email:

# if i =='@':

# break

# else:

# username +=i

# print("Username :{}".format(username))

#count the frequency of a particular character in a string

# s = "hello how are you"

# char = 'h'

# count = 0

# for i in s:

# if i == char:

# count +=1

# print(f"Frequency:{count}")

#remove a particular character from a string

# s = input("Enter a string:")

# char = input("Enter a char:")