LeetCode - Bitwise AND of Numbers Range

Question Definition

Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive.

For example, given the range [5, 7], you should return 4.

Java Solution

public int rangeBitwiseAnd(int m, int n) {
    int d = Integer.MAX_VALUE;
    while ((m & d) != (n & d)) {
        d <<= 1;
    }
    return m & d;
}