This article gives us the methods to find the frequency of minimum occurring character in a python string. This is quite important utility nowdays and knowledge of it is always useful. Let’s discuss certain ways in which this task can be performed.
Method 1 : Naive method + min()
In this method, we simply iterate through the string and form a key in a dictionary of newly occurred element or if element is already occurred, we increase its value by 1. We find minimum occurring character by using min() on values.
# Python 3 code to demonstrate # Least Frequent Character in String # naive method # initializing string test_str = "GeeksforGeeks" # printing original string print ("The original string is : " + test_str) # using naive method to get # Least Frequent Character in String all_freq = {} for i in test_str: if i in all_freq: all_freq[i] += 1 else: all_freq[i] = 1res = min(all_freq, key = all_freq.get) # printing result print ("The minimum of all characters in GeeksforGeeks is : " + str(res)) |
The original string is : GeeksforGeeks The minimum of all characters in GeeksforGeeks is : f
Method 2 : Using collections.Counter() + min()
The most suggested method that could be used to find all occurrences is this method, this actually gets all element frequency and could also be used to print single element frequency if required. We find minimum occurring character by using min() on values.
# Python 3 code to demonstrate # Least Frequent Character in String # collections.Counter() + min() from collections import Counter # initializing string test_str = "GeeksforGeeks" # printing original string print ("The original string is : " + test_str) # using collections.Counter() + min() to get # Least Frequent Character in String res = Counter(test_str) res = min(res, key = res.get) # printing result print ("The minimum of all characters in GeeksforGeeks is : " + str(res)) |
The original string is : GeeksforGeeks The minimum of all characters in GeeksforGeeks is : f
Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.
To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course.
