Python: Accept some words and count the number of distinct words

Last update on April 21 2025 12:57:48 (UTC/GMT +8 hours)

5. Count distinct words and their occurrences from input words

Write a Python program that accepts some words and counts the number of distinct words. Print the number of distinct words and the number of occurrences of each distinct word according to their appearance.

Sample Solution:

Python Code:

# Import the Counter and OrderedDict classes from the collections module
from collections import Counter, OrderedDict

# Create a new class 'OrderedCounter' that inherits from both Counter and OrderedDict
class OrderedCounter(Counter, OrderedDict):
   pass

# Create an empty list 'word_array' to store words
word_array = []

# Prompt the user to input the number of words
n = int(input("Input number of words: "))

# Prompt the user to input the words and store them in 'word_array'
print("Input the words: ")
for i in range(n):
   word_array.append(input().strip())

# Create an instance of the 'OrderedCounter' class using 'word_array'
word_ctr = OrderedCounter(word_array)

# Print the number of unique words in 'word_ctr'
print(len(word_ctr))

# Iterate over the words in 'word_ctr' and print their counts, separated by space
for word in word_ctr:
   print(word_ctr[word], end=' ') 

Sample Output:

Input number of words:  5
Input the words: 
 Red
 Green
 Blue
 Black
 White
5
1 1 1 1 1 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program to read a specified number of words from user input and output the distinct words along with the number of times each appears.
• Write a Python program to use a set to extract unique words from a list and then build a frequency dictionary to count occurrences.
• Write a Python program to implement a function that takes a list of words and returns both the count of distinct words and a list of their frequencies in order of appearance.
• Write a Python program to compare the distinct word count of two different inputs and print which input has more unique words.

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