Basic Programs of String Datatype in Python (solved) -part 1

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Important Programs of String Datatype in Python

Q1. Write a program to accept a string and display its length.

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Ans.

str = input("Enter any String")
print(len(str))

Q2. Write a program to accept a string and count number of vowels.

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Ans. 

str = input("Enter any String")
s1="aeiouAEIOU"
v=0
for i in str:
  if i in s1:
    v=v+1
print(v)

Q3. Write a program to accept a string and display it in reverse.

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Ans

str = input("Enter any String")
print(str[: :-1])

Q4. Write a program to check whether an input string is palindrome or not.

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Ans.

str = input("Enter any String")
strrev =""
for i in range(len(str),0,-1):
    strrev=strrev + str[i-1]
if str.lower() == strrev.lower():
    print("Palindrome")
else:
    print("Not a palindrome")

Q5. Write a program to count number of small case alphabets in String.

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str = input("Enter any String")
L=0
for i in str:
  if i.islower( ):
    L = L+1
print("Total small case alphabets are : ",l)

Q6. Write a program to count the number of words in the input string.

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Ans.

str = input("Enter any String")
L=str.split()
print("Total number of words are ", len(L))

Q7. Write a program to accept a string from the user and count the frequency of alphabet ‘a’ and ‘c’.

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Ans. 

str = input("Enter any String")
a=0
c=0
for i in str:
  if i=='a':
    a+=1
  if i=='c':
    c+=1
print("Total number of alphabet 'a' is ", a)
print("Total number of alphabet 'c' is ", c)

Q8. Write a program to display the last word of the string accepted from user.

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Ans. 

str = input("Enter any String")
w=str.split()
print(w[-1])

Q9. Write a program to display those words from the string in python which are starting from alphabet ‘a’ or ‘A”.

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str = input("Enter any String")
w=str.split()
c=0
for i in w:
  if i[0]=='a' or i[0]=='A':
    c=c+1
print("Total words starting from 'a' or 'A' : ",c)

Q10. Write a program to count number of digits in a string accepted from user.

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str = input("Enter any String")
d=0
for i in str:
  if i.isdigit():
    d=d+1
print("Total digits are : ",d)

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