Question

python program to check whether the string is symmetrical or palindrome.​

Answer 1

Answer:

def palindrome(a):  

 # finding the mid, start  

# and last index of the string  

mid = (len(a)-1)//2

start = 0

last = len(a)-1

flag = 0

# A loop till the mid of the  

# string  

while(start<mid):  

 # comparing letters from right  

 # from the letters from left  

 if (a[start]== a[last]):  

   

  start += 1

  last -= 1

   

 else:  

  flag = 1

  break;  

   

# Checking the flag variable to  

# check if the string is palindrome  

# or not  

if flag == 0:  

 print("The entered string is palindrome")  

else:  

 print("The entered string is not palindrome")  

 

# Function to check whether the  

# string is symmetrical or not    

def symmetry(a):  

 

n = len(a)  

flag = 0

 

# Check if the string's length  

# is odd or even  

if n%2:  

 mid = n//2 +1

else:  

 mid = n//2

 

start1 = 0

start2 = mid  

 

while(start1 < mid and start2 < n):  

 

 if (a[start1]== a[start2]):  

  start1 = start1 + 1

  start2 = start2 + 1

 else:  

  flag = 1

  break

 

# Checking the flag variable to  

# check if the string is symmetrical  

# or not  

if flag == 0:  

 print("The entered string is symmetrical")  

else:  

 print("The entered string is not symmetrical")  

 

# Driver code  

string = 'amaama'

palindrome(string)  

symmetry(string)  

Explanation:

explanation is given in the comments itself

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