Python Tutorial | Python Strings

Iterating Through String

1.
Python program to take input for a string and display it in the given format. (iterate through string)
n=”hello”
h
e
l
l
o

Sol:

#solution using for loop

n=input("Enter any string ")
for i in n:
    print(i)

#using while loop

n=input("Enter any string ")
i=0
while(i<len(n)):
    print(n[i])
    i=i+1
    

2.
Python program to take input for a string and display it in the given format. (iterate through string)
n=”hello”
Output:
hello

Sol:

#using for loop

n=input("Enter any string ")
for i in n:
    print(i,end=' ')
#using while loop

n=input("Enter any string ")
i=0
while(i<len(n)):
    print(n[i],end=' ')
    i=i+1
    

3.
Python program to traverse a string and display total upper case alphabets

Example Output:
n=”HeLLo”

Output:
total upper case alphabets 3

Sol:

#using for loop

n=input("Enter any string ")
u=0
for i in n:
    print(i)
    if(i>='A' and i<='Z'):
        u=u+1

print("total upper case alphabets ",u)
#using while loop

n=input("Enter any string ")
u=0
i=0
while(i<len(n)):
    print(n[i])
    if(n[i]>='A' and n[i]<='Z'):
        u=u+1
    i=i+1

print("total upper case alphabets ",u)

4.
Python program to traverse a string and display total lower case alphabets in the string

Example:
n=”heLLo”

output:
total lower case alphabets 3

Sol:

#using for loop

n=input("Enter any string ")
u=0
for i in n:
    print(i)
    if(i>='a' and i<='z'):
        u=u+1

print("total lower case alphabets ",u)
#using while loop

n=input("Enter any string ")
u=0
i=0
while(i<len(n)):
    print(n[i])
    if(n[i]>='a' and n[i]<='z'):
        u=u+1
    i=i+1

print("total lower case alphabets ",u)

5.
Python program to traverse a string and display total digits in the string

Example Output:
n=”he123o”

output:
total digits 3

Sol:

#using for loop

n=input("Enter any string ")
d=0
for i in n:
    print(i)
    if(i>='0' and i<='9'):
        d=d+1

print("total digits ",d)
#using while loop

n=input("Enter any string ")
d=0
i=0
while(i<len(n)):
    print(n[i])
    if(n[i]>='a' and n[i]<='z'):
        d=d+1
    i=i+1

print("total digits ",d)

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