Program to Find Longest Word from Sentence

Python Program to Find Longest Word from Sentence

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In the previous article, we have discussed Python Program to Move all Negative Elements to End in Order with Extra Space Allowed
Given a string and the task is to find the longest word from a given sentence.

split() method:

The split() method in Python divides a string into a list of strings by breaking the string with the specified separator.

Examples:

Example1:

Input:

Given String = "Hello this is btechgeeks"

Output:

The Longest Word in the above given sentence = btechgeeks
The length of the longest word = 10

Example2:

Input:

Given String = "Goodmorning this is btechgeeks"

Output:

The Longest Word in the above given sentence = Goodmorning
The length of the longest word = 11

Program to Find Longest Word from Sentence

Below are the ways to find the longest word from a given sentence.

Method #1: Using Built-in Functions (Static Input)

Approach:

  • Give the string as static input and store it in a variable.
  • Split the given string into a list of words using the split() function and store it in another variable say “wrd_lst”.
  • Get the longest word from a given sentence using max(), key functions, and store it in another variable.
  • Calculate the length of the above-obtained longest word using the len() function and store it in another variable.
  • Print the longest word in the above-given sentence.
  • Print the above-obtained length of the longest word.
  • The Exit of the Program.

Below is the implementation:

# Give the string as static input and store it in a variable.
Gvn_str = "Hello this is btechgeeks"
# Split the given string into a list of words using the split() function and
# store it in another variable say "wrd_lst".
wrd_lst = Gvn_str.split()
# Get the longest word from a given sentence using max(), key functions, and
# store it in another variable.
longst_wrd = max(wrd_lst, key=len)
# Calculate the length of the above-obtained longest word using the len() function
# and store it in another variable.
len_longst_wrd = len(longst_wrd)
# Print the longest word in the above-given sentence.
print("The Longest Word in the above given sentence = ", longst_wrd)
# Print the above-obtained length of the longest word.
print("The length of the longest word = ", len_longst_wrd)

Output:

The Longest Word in the above given sentence =  btechgeeks
The length of the longest word =  10

Method #2: Using Built-in Functions (User Input)

Approach:

  • Give the string as user input using the input() function and store it in a variable.
  • Split the given string into a list of words using the split() function and store it in another variable say “wrd_lst”.
  • Get the longest word from a given sentence using max(), key functions, and store it in another variable.
  • Calculate the length of the above-obtained longest word using the len() function and store it in another variable.
  • Print the longest word in the above-given sentence.
  • Print the above-obtained length of the longest word.
  • The Exit of the Program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
Gvn_str = input("Enter some random sentence = ")
# Split the given string into a list of words using the split() function and
# store it in another variable say "wrd_lst".
wrd_lst = Gvn_str.split()
# Get the longest word from a given sentence using max(), key functions, and
# store it in another variable.
longst_wrd = max(wrd_lst, key=len)
# Calculate the length of the above-obtained longest word using the len() function
# and store it in another variable.
len_longst_wrd = len(longst_wrd)
# Print the longest word in the above-given sentence.
print("The Longest Word in the above given sentence = ", longst_wrd)
# Print the above-obtained length of the longest word.
print("The length of the longest word = ", len_longst_wrd)

Output:

Enter some random sentence = Goodmorning this is btechgeeks
The Longest Word in the above given sentence = Goodmorning
The length of the longest word = 11

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