How to use collections.Counter() to Combine two dictionary adding values for common keys In Python
Here we are using the collections module to calculate the combination of two dictionaries by adding the values for common keys.
Python3
# Python program to combine two dictionary# adding values for common keysfrom collections import Counter# initializing two dictionariesdict1 = {'a': 12, 'for': 25, 'c': 9}dict2 = {'Geeks': 100, 'geek': 200, 'for': 300}# adding the values with common key Cdict = Counter(dict1) + Counter(dict2)print(Cdict) |
Output:
Counter({'for': 325, 'geek': 200, 'Geeks': 100, 'a': 12, 'c': 9})
The time complexity of the given program is O(m+n), where m and n are the number of elements in dict1 and dict2, respectively.
The auxiliary space complexity of the program is O(k), where k is the number of unique keys in both dictionaries.
Python | Combine two dictionary adding values for common keys
Given two dictionaries, the task is to combine the dictionaries such that we get the added values for common keys in the resultant dictionary.
Example:
Input: dict1 = {'a': 12, 'for': 25, 'c': 9}
dict2 = {'Geeks': 100, 'geek': 200, 'for': 300}
Output: {'for': 325, 'Geeks': 100, 'geek': 200}
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