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201. Bitwise AND of Numbers Range
Medium
Given two integers left and right that represent the range [left, right], return the bitwise AND of all numbers in this range, inclusive.
Example 1:
Input: left = 5, right = 7
Output: 4
Example 2:
Input: left = 0, right = 0
Output: 0
Example 3:
Input: left = 1, right = 2147483647
Output: 0
Constraints:
0 <= left <= right <= 231 - 1
Solution
public class Solution {
public int RangeBitwiseAnd(int left, int right) {
var shift = 0;
for (; left != right; left >>= 1, right >>= 1, shift++) {
}
return left << shift;
}
}