Stringquestion.py

#  ## Question-31--Print string in reverse,its length,in uppercase,lowercase and copy into another string
# s = "shrey"
# print(f"reverse string -->{s[::-1]}")
# # print(f"length of string-->{len(s)}")
# # print(f"String in upper format-->{s.upper()}")
# # print(f"String in lower format -- >{s.lower()}")

# # ##Question 32--> Arrange String character such that lowercase letters should come first
# # s = "ShEry" 
# # lower = "" 
# # upper = ""
# # for i in s :
# #     if i.islower():
# #         lower = lower+i
# #     elif i.isupper():
# #         upper = upper + i
# # print(lower + upper) ###--->> this method of string addition is clled stirng concatenation
# # print(upper + lower)


# # ##Question 33-->Count all letters, digits, and special symbols from a given string
# #     #Given: str1 = "P@#yn26at^&i5ve"
# #     #Expected Outcome:
# #     #Total counts of chars, digits, and symbols
# #     #Chars = 8
# #     #Digits = 3
# #     #Symbol = 4

# # str1 = "P@#yn26at^&i5ve"
# # alpha = 0
# # digit = 0
# # special = 0

# # for i in str1:
# #     if i.isalpha ():
# #         alpha = alpha + 1
# #     elif i.isdigit():
# #         digit = digit +1
# #     else:
# #         special = special + 1
# # print(f"alphabet count:{alpha}")
# # print(f"digit count:{digit}")
# # print(f"Special count:{special}")
# # print(f"Total:{len(str1)}")

# # ## 34 .Compare two strings without using inbuilt functionsx
# # str1 = "hello"
# # str2 = "hello"
# # if len(str1) == len(str2):
# #     for i in range(len(str1)):
# #         if str1[i] != str2[i]:
# #             print("string are not same")
# #             break
# #     else:
# #         print("string are same")
# # else:
# #     print("both string are of not the same length")

# ##35. count Vowels from given String
# str1 = "DEEPAK"
# vowels = "aeiouAEIOU"
# count = 0

# for i in str1:
#     if i in vowels:
#         count += 1

# print(f"Total count of vowels are:{count}")

# ##through function method
# def countvowels():
#     str1 = "DEEPAK"
# vowels = "aeiouAEIOU"
# count = 0

# for i in str1:
#     if i in vowels:
#         count += 1

# print(f"Total count of vowels are:{count}")

# countvowels()

# ### through return
# def countvowels():
#     str1 = "DEEPAK"
#     vowels = "aeiouAEIOU"
#     count = 0

#     for i in str1:
#         if i in vowels:
#             count += 1

#     return f"Total count of vowels are:{count}"

# print(countvowels())


# ### question--36 Reverse a string
# # s = "Hello"
# # rev = (s[::-1])
# # print(rev)
# rev = ""
# for i in s[: : -1]:
#     rev = rev + i 
# print(rev)

# ## question 37--Check string is Pallindrome or not
# n = "Madam"
# rev = (n[: : -1])
# if n== rev:
#     print(f"{n}  is pallindrome")
# else:
#     print(f"{n} is not a pallindrome")

# ## function method
# def pallindrome(n):
#     rev  = n[: : -1]
#     if n == rev:
#         print(f"{n} is an pallindrome")
#     else:
#         print(f"{n} is not a pallindrome")
# pallindrome("madam")


## through return method
# def pallindrome(n):
#     rev  = (n[: : -1])
#     if n == rev:
#         return f"{n} is an pallindrome"
#     else:
#         return f"{n} is not a pallindrome"
# print(pallindrome("madam"))





# ## count number of vowels and consonant from a string
# s = "deepak"
# vowels = 0
# consonant = 0
# for i in s:
#     if i in "aeiouAEIOU":
#         vowels += 1
#     else:
#         consonant += 1
# print(f"Total vowels are:{vowels}")
# print(f"Total consonant are:{consonant}")

# ## function method
# def fun1(s):
#     vowel = 0
#     consonant = 0
#     if i in "aeiouAEIOU":
#         vowels += 1
#     else:
#         consonant += 1
# print(vowels)
# print(consonant)

####                    17th april
##count the number of digit in a number
# n = 1234
# count = 0
# while n > 0:
#     #digit = n% 10
#     count = count + 1
#     n = n//10
# print(count)

# ##function
# def count(n):
#     n= 256
#     count = 0
#     while n > 0:
#         digit = n%10
#         count = count + 1
#         n = n//10
#     print(count)
# count(256)

# ### if we use return inside a  function method we have to write print in last like below or  if we use return inside a  function method it wil act like a mini variable and untill unless we didn't print the variable the output will not be displayed

# def count(n):
#     n= 2567890
#     count = 0
#     while n > 0:
#         digit = n%10
#         count = count + 1
#         n = n//10
#     return (count)
# print(count(2567890))

## find the sum of digits if a number (e.g., 123-->6)
# n = 123
# sum = 0
# while n > 0:
#     digit= n % 10
#     sum = sum + digit
#     n = n//10
# print(f"soum of digit is",{sum})

# ## function method

# def check_sum (n:int):
#     n = 123
#     sum = 0
#     while n > 0:
#         digit = n % 10
#         sum = sum + digit
#         n = n//10
#     return (f"sum of digit is",{sum})
# print(check_sum(123))

##check whether number is armstrong number is not
# n = 153
# sum = 0
# copy = n
# while n > 0:
#     digit = n % 10
#     power = digit ** 3
#     sum = sum + power
#     n = n//10
# if copy == sum:
#     print("Armstrong number")
# else:
#     print("not an armstrong number")

# ## function
# def armstrong(n):
#     sum = 0
#     copy = n
#     while n > 0:
#         digit = n % 10
#         power = digit **  3
#         sum = sum + power
#         n = n // 10
#     if copy == sum :
#         print("it is an armstrong number")
#     else:
#         print("it is not an armstrong number")

# armstrong(153)
# armstrong(1534)
# armstrong(256)
# armstrong(123)
# armstrong(370)
# armstrong(371)

## through return method
# def armstrong(n):
#     sum = 0
#     copy = n
#     while n > 0:
#         digit = n % 10
#         power = digit **  3
#         sum = sum + power
#         n = n // 10
#     if copy == sum :
#         return f"it is an armstrong number"
#     else:
#         return f"it is not an armstrong number"
# print(armstrong(373))

### Iterative statement practice
##16 -- accept an integer and print hello world n times
# n = int(input("enter your number"))
# while n > 0:
#     print("HELLO WORLD")

##
# n = int(input())
# for i in range(n):
#     print("hello world")

## through function
# def hello_world(n):
#     while n > 0:
#         print("hello world")
# hello_world(9)

## through return method
def hello_world(n):
    while n > 0:
        return f"hello world"
n = int(input("enter your number"))
print(hello_world(n))