Contents

- 1 What is toggle a bit?
- 2 How do you toggle a specific bit?
- 3 How do you toggle a KTH bit?
- 4 What is a set bit?
- 5 How do I set my nth bit?
- 6 What operator is used to reset a bit?
- 7 How do you find the highest bit in a set?
- 8 How do I know if ITH is bit set?
- 9 How do I toggle a number?
- 10 What is toggle in Python?
- 11 How do you check if a no is a power of 2?
- 12 What is XOR in Java?
- 13 How do you swap odd and even bits?
- 14 Which of the following Bitwise operation will you use to toggle a particular bit?

## What is toggle a bit?

Toggling a bit means that if K-th bit is 1, then change it to 0 and if it is 0 then change it to 1.

## How do you toggle a specific bit?

- Setting a bit. Use the bitwise OR operator ( | ) to set a bit. number |= 1 << x; That will set a bit x.
- Clearing a bit. Use the bitwise AND operator ( & ) to clear a bit. number &= ~(1 << x); That will clear bit x.
- Toggling a bit. The XOR operator ( ^ ) can be used to toggle a bit. number ^= 1 << x;

## How do you toggle a KTH bit?

C++ program to toggle Kth bit of a number

- Input the number and K
^{th}bit to be toggled. - Left shift 1 – (K-1) times to create a mask where only K
^{th}bit is set. - Perform bitwise XOR with this mask to toggle the K
^{th}bit. - Output the result after XOR in decimal form.

## What is a set bit?

Set bits in a binary number is represented by 1. Whenever we calculate the binary number of an integer value then it is formed as the combination of 0’s and 1’s. So, the digit 1 is known as set bit in the terms of the computer.

## How do I set my nth bit?

Logic to set nth bit of a number

- Input number from user. Store it in some variable say num.
- Input bit position you want to set. Store it in some variable say n.
- To set a particular bit of number. Left shift 1 n times and perform bitwise OR operation with num. Which is newNum = (1 << n) | num;.

## What operator is used to reset a bit?

Explanation: Bitwise operator | can be used to “set” a particular bit while bitwise operator & can be used to “ reset ” a particular bit.

## How do you find the highest bit in a set?

Step by step descriptive logic to get highest order set bit of a number.

- Input number from user.
- Find total bits required to store an integer in memory say, INT_SIZE = sizeof(int) * 8.
- Run a loop from 0 to INT_SIZE.
- Initialize a variable to store highest order, say order = -1;.

## How do I know if ITH is bit set?

Method 1 (Using Left Shift Operator) 1) Left shift given number 1 by k-1 to create a number that has only set bit as k-th bit. temp = 1 << (k-1) 2) If bitwise AND of n and temp is non-zero, then result is SET else result is NOT SET.

## How do I toggle a number?

Toggling bit means setting a bit in its complement state. Means if bit is currently set then change it to unset and vice versa. To toggle a bit we will use bitwise XOR ^ operator. Logic to toggle nth bit of a number

- Input number and nth bit position to toggle from user.
- Left shift 1 to n times, i.e. 1 << n.

## What is toggle in Python?

This python program allows the user to enter a string. Next, it toggles lowercase letters to uppercase and uppercase characters to lowercase. The second statement checks whether the character is between A and Z. If true, we are adding 32 to its ASCII value.

## How do you check if a no is a power of 2?

Another solution is to keep dividing the number by two, i.e, do n = n/ 2 iteratively. In any iteration, if n% 2 becomes non-zero and n is not 1 then n is not a power of 2. If n becomes 1 then it is a power of 2.

## What is XOR in Java?

Bitwise XOR (exclusive or) “^” is an operator in Java that provides the answer ‘1’ if both of the bits in its operands are different, if both of the bits are same then the XOR operator gives the result ‘0’. XOR is a binary operator that is evaluated from left to right.

## How do you swap odd and even bits?

The solution assumes that input number is stored using 32 bits.

- Get all even bits of x by doing bitwise and of x with 0xAAAAAAAA.
- Get all odd bits of x by doing bitwise and of x with 0x55555555.
- Right shift all even bits.
- Left shift all odd bits.
- Combine new even and odd bits and return.

## Which of the following Bitwise operation will you use to toggle a particular bit?

Which of the following bitwise operations will you use to toggle a particular bit? Explanation: 1 XOR 1 = 0, 0 XOR 1 = 1, note that NOT inverts all the bits, while XOR toggles only a specified bit.