Python: Create a string from two given strings concatenating uncommon characters of the said strings

Last update on June 12 2025 12:42:53 (UTC/GMT +8 hours)

Concatenate uncommon characters in strings.

Write a Python program that concatenates uncommon characters from two strings.

Visual Presentation:

Sample Solution:

Python Code:

# Function to concatenate uncommon characters
def uncommon_chars_concat(s1, s2):

  # Convert strings to sets
  set1 = set(s1)
  set2 = set(s2)

  # Find common characters
  common_chars = list(set1 & set2) 

  # List comprehension to get uncommon chars from each string
  result = [ch for ch in s1 if ch not in common_chars] + [ch for ch in s2 if ch not in common_chars]

  # Join characters into string
  return(''.join(result))

# Test strings
s1 = 'abcdpqr' 
s2 = 'xyzabcd'

# Print original strings
print("Original Substrings:\n",s1+"\n",s2)

# Print message
print("\nAfter concatenating uncommon characters:")

# Print result 
print(uncommon_chars_concat(s1, s2)) 

Sample Output:

Original Substrings:
 abcdpqr
 xyzabcd

After concatenating uncommon characters:
pqrxyz

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to extract characters that are unique to each of two strings and concatenate them into a new string.
• Write a Python program to find and join uncommon characters from two strings by comparing their character sets.
• Write a Python program to iterate through both strings and collect characters that are not present in the other, then concatenate them.
• Write a Python program to use set symmetric difference to identify uncommon characters and return the result as a concatenated string.

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