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Python – Mirror Image of String

  • Last Updated : 02 Sep, 2020

Given a String, perform its mirror imaging, return “Not Possible” if mirror image not possible using english characters.

Input : test_str = ‘boid’
Output : doib
Explanation : d replaced by b and vice-versa as being mirror images.

Input : test_str = ‘gfg’
Output : Not Possible
Explanation : Valid Mirror image not possible.

Method : Using loop + loopup dictionary

This is one way in which this task can be performed. In this, we construct lookup dictionary for all valid mirrorable english characters, then perform task of access from them.


# Python3 code to demonstrate working of 
# Mirror Image of String
# Using Mirror Image of String
# initializing strings
test_str = 'void'
# printing original string
print("The original string is : " + str(test_str))
# initializing mirror dictionary
mir_dict = {'b':'d', 'd':'b', 'i':'i', 'o':'o', 'v':'v', 'w':'w', 'x':'x'}
res = ''
# accessing letters from dictionary
for ele in test_str:
    if ele in mir_dict:
        res += mir_dict[ele]
    # if any character not present, flagging to be invalid 
        res = "Not Possible"
# printing result 
print("The mirror string : " + str(res)) 
The original string is : void
The mirror string : voib

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