Python: Create a string from two given strings concatenating uncommon characters of the said strings
Python String: Exercise-70 with Solution
Write a Python program to create a string from two given strings concatenating uncommon characters of the said strings.
Sample Solution:-
Python Code:
def uncommon_chars_concat(s1, s2):
set1 = set(s1)
set2 = set(s2)
common_chars = list(set1 & set2)
result = [ch for ch in s1 if ch not in common_chars] + [ch for ch in s2 if ch not in common_chars]
return(''.join(result))
s1 = 'abcdpqr'
s2 = 'xyzabcd'
print("Original Substrings:\n",s1+"\n",s2)
print("\nAfter concatenating uncommon characters:")
print(uncommon_chars_concat(s1, s2))
Sample Output:
Original Substrings: abcdpqr xyzabcd After concatenating uncommon characters: pqrxyz
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Python: Tips of the Day
Check if a given key already exists in a dictionary:
In is the intended way to test for the existence of a key in a dict.
d = {"key1": 10, "key2": 23} if "key1" in d: print("this will execute") if "nonexistent key" in d: print("this will not")
If you wanted a default, you can always use dict.get():
d = dict() for i in range(100): key = i % 10 d[key] = d.get(key, 0) + 1
and if you wanted to always ensure a default value for any key you can either use dict.setdefault() repeatedly or defaultdict from the collections module, like so:
from collections import defaultdict d = defaultdict(int) for i in range(100): d[i % 10] += 1
but in general, the in keyword is the best way to do it.
Ref: https://bit.ly/2XPMRyz
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