Reverse the bits of an 32 bit unsigned integer A.Problem Constraints0 <= A <= 232Input FormatFirst and only argument of input contains an integer A.Output FormatReturn a single unsigned integer denoting the decimal value of reversed bits.Example InputInput 1: 0Input 2: 3Example OutputOutput 1: 0Output 2: 3221225472Example ExplanationExplanation 1: 00000000000000000000000000000000=> 00000000000000000000000000000000Explanation 2: 00000000000000000000000000000011 => 11000000000000000000000000000000
Question
Reverse the bits of an 32 bit unsigned integer A.Problem Constraints0 <= A <= 232Input FormatFirst and only argument of input contains an integer A.Output FormatReturn a single unsigned integer denoting the decimal value of reversed bits.Example InputInput 1: 0Input 2: 3Example OutputOutput 1: 0Output 2: 3221225472Example ExplanationExplanation 1: 00000000000000000000000000000000=> 00000000000000000000000000000000Explanation 2: 00000000000000000000000000000011 => 11000000000000000000000000000000
Solution
Here is a Python solution for the problem:
def reverseBits(A):
# Convert the number into binary and remove the first two characters
binary = bin(A)[2:]
# Append leading zeros to make the binary number 32 bit
binary = '0' * (32 - len(binary)) + binary
# Reverse the binary number
reversed_binary = binary[::-1]
# Convert the reversed binary number back into decimal and return
return int(reversed_binary, 2)
This function works by first converting the input number into binary format and removing the "0b" prefix. It then appends leading zeros to make the binary number 32 bit. After that, it reverses the binary number and converts it back into decimal format.
Similar Questions
Reverse bits of a given 32 bits unsigned integer.Note:Note that in some languages, such as Java, there is no unsigned integer type. In this case, both input and output will be given as a signed integer type. They should not affect your implementation, as the integer's internal binary representation is the same, whether it is signed or unsigned.In Java, the compiler represents the signed integers using 2's complement notation. Therefore, in Example 2 above, the input represents the signed integer -3 and the output represents the signed integer -1073741825. Example 1:Input: n = 00000010100101000001111010011100Output: 964176192 (00111001011110000010100101000000)Explanation: The input binary string 00000010100101000001111010011100 represents the unsigned integer 43261596, so return 964176192 which its binary representation is 00111001011110000010100101000000.Example 2:Input: n = 11111111111111111111111111111101Output: 3221225471 (10111111111111111111111111111111)Explanation: The input binary string 11111111111111111111111111111101 represents the unsigned integer 4294967293, so return 3221225471 which its binary representation is 10111111111111111111111111111111. Constraints:The input must be a binary string of length 32
Given a signed 32-bit integer x, return x with its digits reversed. If reversing x causes the value to go outside the signed 32-bit integer range [-231, 231 - 1], then return 0.Assume the environment does not allow you to store 64-bit integers (signed or unsigned). Example 1:Input: x = 123Output: 321Example 2:Input: x = -123Output: -321Example 3:Input: x = 120Output: 21 Constraints:-231 <= x <= 231 - 1
Write a program that takes in a positive integer as input, and outputs a string of 1's and 0's representing the integer in reverse binary. For an integer x, the algorithm is:As long as x is greater than 0 Output x % 2 (remainder is either 0 or 1) x = x / 2Note: The above algorithm outputs the 0's and 1's in reverse order.Ex: If the input is:6the output is:0116 in binary is 110; the algorithm outputs the bits in reverse.
Write a function that takes an integer and returns the number of 1 bits it has.Problem Constraints0 <= A <= 4294967295Input FormatFirst and only argument contains integer AOutput FormatReturn an integer as the answerExample InputInput1: 11Example OutputOutput1:3Example ExplanationExplaination1:11 is represented as 1101 in binary
You are given two numbers A and B. Write a program to count the number of bits to be flipped to change the number A to the number B. Flipping a bit of a number means changing a bit from 1 to 0 or vice versa.Input FormatThe first line of input contains T - the number of test cases. Each of the next T lines contains 2 integers A and B, separated by space.Output FormatFor each test case, print the number of bit flips required to convert A to B, separated by a new line.Constraints1 <= T <= 1000000 <= N <= 109ExampleInput420 1016 81 153549 24Output4236
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