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 i = 0;
    while (m != n) {
        m >>= 1;
        n >>= 1;
        ++i;
    }
    return (m << i);
}