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Python | Strings with the same characters in the front and back

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Method # 1: Using a Loop
This is a brute force method by which this task can be accomplished. This iterates over each element of the list and checks the leading and trailing character of each line and increments the counter in case we find a match.

# Python3 code to demonstrate how it works
# Similar front and back elements
# Using a loop

 
# initialize the list

test_list = [ ’gfg’ , ’ is’ , ’best’ , ’treat’ ]

 
# print original list

print ( "The original list:" + str (test_list))

 
# Similar front and back elements
# Using a loop

count = 0

for ele in test_list:

if ele [ 0 ] = = ele [ - 1 ]:

count = count + 1  

 
# print result

print ( "Total Strings with similar front and rear elements:" + str (count))

Output:

 The original list: [’gfg’,’ is’, ’best’,’ treat ’] Total Strings with similar front and rear elements: 2 

Method # 2: Using sum () + generator expression
This is one liner alternative for this task. In this we are doing the iteration task using a generator expression and summing with sum ().

# Python3 code to demonstrate how it works
# Similar front and back elements
# Using sum () + generator expression

 
# initialize the list

test_list = [ ’gfg’ , ’is’ , ’ best’ , ’treat’ ]

 
# print the original list ska

print ( "The original list : " + str (test_list))

 
# Similar front and back elements
# Using sum () + generator expression

res = sum ( 1 for ele in test_list if ele [ 0 ] = = ele [ - 1 < / code> ])

 
# print result

print ( "Total Strings with similar front and rear elements: " + str (res))

Output:

 The original list : [’gfg’,’ is’, ’best’,’ treat’] Total Strings with similar front and rear elements: 2 

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