leetcode201.数字范围按位与
找到公共前缀部分，然后后面的部分全0
class Solution {public int rangeBitwiseAnd(int left, int right) {int offset = 0;while (left != right) {offset++;left = left >> 1;right = right >> 1;}return right << offset;}
}
找到公共前缀部分，然后后面的部分全0
class Solution {public int rangeBitwiseAnd(int left, int right) {int offset = 0;while (left != right) {offset++;left = left >> 1;right = right >> 1;}return right << offset;}
}