Java: Find the number of bits required to flip to convert two given integers

Java Basic: Exercise-147 with Solution

Bits to Flip Between Integers

Write a Java program to find the number of bits required to flip to convert two given integers.

Example: 27 --> 11011
23--> 10111

Sample Solution:

Java Code:

import java.util.*
public class Solution {
    public static void main(String[] args) {
        // Test the bitSwapRequired function and print the result
        System.out.println(bitSwapRequired(27, 23));
    }

    public static int bitSwapRequired(int x, int y) {
        int ctr = 0; // Initialize a counter to keep track of bit differences

        // XOR the two integers (x and y) to find differing bits
        for (int z = x ^ y; z != 0; z = z >>> 1) {
            // Right shift 'z' by 1 bit and check the least significant bit
            ctr += z & 1; // If the least significant bit is 1, increment the counter
        }
        return ctr; // Return the total count of differing bits
    }
}

Sample Output:

2

Flowchart:

Java Code Editor:

Previous: Write a Java program to convert an sorted array to binary search tree. Maintain minimal height of the tree.
Next: Write a Java program to find the index of the first unique character in a given string, assume that there is at least one unique character in the string.