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Python: Count most and least common characters in a given string

Python Collections: Exercise-21 with Solution

Write a Python program to count the most and least common characters in a given string.

Sample Solution:

Python Code:

from collections import Counter 
def max_least_char(str1):
    temp = Counter(str1) 
    max_char = max(temp, key = temp.get)
    min_char = min(temp, key = temp.get)
    return (max_char, min_char)

str1 = "hello world"
print ("Original string: ")
print(str1)
result = max_least_char(str1)
print("\nMost common character of the said string:",result[0])
print("Least common character of the said string:",result[1])

Sample Output:

Original string: 
hello world

Most common character of the said string: l
Least common character of the said string: h

Flowchart:

Python Collections: Count most and least common characters in a given string.

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Python Code Editor:

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Python: Tips of the Day

Maps the values of a list to a dictionary using a function, where the key-value pairs consist of the original value as the key and the result of the function as the value:

Example:

def tips_map_dictionary(itr, fn):
  ret = {}
  for a in itr:
    ret[a] = fn(a)
  return ret
print(tips_map_dictionary([2,4,6], lambda a: a * a))

Output:

{2: 4, 4: 16, 6: 36}

 

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