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# Bitwise AND of Numbers Range LeetCode Solution

## Problem – Bitwise AND of Numbers Range LeetCode Solution

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`

## Bitwise AND of Numbers Range LeetCode Solution in Java

``````public class Solution {
public int rangeBitwiseAnd(int m, int n) {
if(m == 0){
return 0;
}
int moveFactor = 1;
while(m != n){
m >>= 1;
n >>= 1;
moveFactor <<= 1;
}
return m * moveFactor;
}
}
``````

## Bitwise AND of Numbers Range LeetCode Solution in C++

``````int rangeBitwiseAnd(int m, int n) {
return (n > m) ? (rangeBitwiseAnd(m/2, n/2) << 1) : m;
}
``````

## Bitwise AND of Numbers Range LeetCode Solution in Python

``````def rangeBitwiseAnd(self, m, n):
i = 0
while m != n:
m >>= 1
n >>= 1
i += 1
return n << i
``````
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