Python Program to Check If Two Strings Are Anagrams or Not

This article is created to cover some programs in Python that receive two strings from the user at run-time and check whether the two strings are anagrams or not. Here is a list of programs:

Before creating these programs, let's first understand anagrams.

What are anagram strings?

Two strings can be called an anagram when:

For example, abc and cba are two anagram strings. Similarly, creative and reactive are also anagrams. That is, characters from creative can be rearranged to form reactive, and vice versa.

Check Two strings are anagrams using a for loop

This program is created using a for loop to check whether the two strings entered by the user are anagrams or not. The question is: write a Python program to check if an anagram exists or not without sorting the string. Here is its answer:

print("Enter the First String:")
textOne = str(input())
print("Enter the Second String:")
textTwo = str(input())
found=0
notFound=0
lenOne = len(textOne)
lenTwo = len(textTwo)
if lenOne == lenTwo:
    for i in range(lenOne):
        found = 0
        for j in range(lenOne):
            if textOne[i] == textTwo[j]:
                found = 1
                break
        if found==0:
            notFound = 1
            break
    if notFound==1:
        print("\nStrings are Not Anagram")
    else:
        print("\nStrings are Anagram")
else:
    print("\nLength of Strings are not Equal")

Here is its sample run:

python check anagram strings

Now supply two strings input, say listen as the first string and silent as the second string, and press the ENTER key to check and print whether these two strings are anagrams or not, as shown in the snapshot given below:

check strings are anagram or not python

Here is another sample run with user input listen and silenx as the first and second strings:

check anagram strings python

And here is the third sample run with user input codes and cracker as the first and second strings:

check anagram string program python

Note: The str() method is used to convert any type of value to a string type. And the len() method returns the length of the string passed as its argument.

The dry run of the above program with user input (listen and silent) goes like this:

Modified version of the previous program

This program uses the sorted() method to sort the string and compares strings in a character-by-character manner to check whether two strings are anagrams or not. The end= is used to skip inserting an automatic newline using print().

print(end="Enter the First String: ")
textOne = str(input())
print(end="Enter the Second String: ")
textTwo = str(input())
lenOne = len(textOne)
lenTwo = len(textTwo)
notFound=0
if lenOne == lenTwo:
    textOne = sorted(textOne)
    textTwo = sorted(textTwo)
    for i in range(lenOne):
        if textOne[i] != textTwo[i]:
            notFound=1
            break
    if notFound==0:
        print("\nStrings are Anagram")
    else:
        print("\nStrings are Not Anagram")
else:
    print("\nLength of Strings are not Equal")

Here is its sample run with user input (creative and reactive) as two strings:

check anagram string python

Check anagram strings using sorted()

This program uses the sorted() method to do the same job as the previous program did. The two strings entered by the user get compared directly using the == operator.

print("Enter First String: ", end="")
textOne = str(input())
print("Enter Second String: ", end="")
textTwo = str(input())

lenOne = len(textOne)
lenTwo = len(textTwo)

if lenOne == lenTwo:
    if sorted(textOne) == sorted(textTwo):
        print("\nStrings are Anagram")
    else:
        print("\nStrings are Not Anagram")
else:
    print("\nLength of Strings are not Equal")

Here is its sample run with user input, sadder and dreads:

python check anagram string using sorted

Check anagram strings using the function

This program is created using a user-defined function named CheckAnag(). The function receives two strings as its arguments and returns 1 if both strings are anagrams.

def CheckAnag(sOne, sTwo):
    if sorted(sOne) == sorted(sTwo):
        return 1

print("Enter First String: ", end="")
textOne = str(input())
print("Enter Second String: ", end="")
textTwo = str(input())

rVal = CheckAnag(textOne, textTwo)
if rVal==1:
        print("\nStrings are Anagram")
else:
    print("\nStrings are Not Anagram")

Check anagram strings using Class

This is the last program created using classes, an object-oriented feature of Python. To access the member functions of a class, an object is required. Therefore, an object named obj is created of class CodesCracker to access its member function named CheckAnag() using the dot (.) operator.

class CodesCracker:
    def CheckAnag(self, sOne, sTwo):
        if sorted(sOne) == sorted(sTwo):
            return 1

print("Enter First String: ", end="")
textOne = str(input())
print("Enter Second String: ", end="")
textTwo = str(input())

obj = CodesCracker()
rVal = obj.CheckAnag(textOne, textTwo)

if rVal==1:
        print("\nStrings are Anagram")
else:
    print("\nStrings are Not Anagram")

Python Online Test


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