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Hey everyone, and welcome to my channel! Today, we're going to explore different ways to determine if a number is even or odd. We'll cover five simple yet effective methods, each with its own unique approach.

Method 1: The Modulo Operator

This is the most straightforward and commonly used method.
We simply check the remainder after dividing the number by 2.
If the remainder is 0, the number is even; otherwise, it's odd.
Method 2: Bitwise AND &

This method utilizes bitwise operations, which can be quite efficient.
We perform a bitwise AND operation between the number and 1.
If the result is 0, the number is even; otherwise, it's odd.
Method 3: Integer Division //

This method uses integer division, which discards any remainder.
We divide the number by 2 and compare it to the result of regular division /
If both results are the same, the number is even; otherwise, it's odd.
Method 4: Checking the Last Digit

This method relies on the fact that even numbers always end in 0, 2, 4, 6, or 8, while odd numbers end in 1, 3, 5, 7, or 9.
We convert the number to a string and check its last character.
If the last character is one of the even digits, the number is even; otherwise, it's odd.
Method 5: Bitwise Shift Operators

This method uses bitwise shift operators to manipulate the binary representation of the number.
We right-shift the number by 1, then left-shift it back by 1.
If the resulting number is the same as the original number, it's even; otherwise, it's odd.
Importance in Interviews
Knowing how to check if a number is even or odd is a common question in technical interviews, particularly those related to programming and algorithms. It tests your understanding of basic arithmetic operations and problem-solving skills.

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