Welcome to Subscribe On Youtube

201. Bitwise AND of Numbers Range

Description

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

Solutions

• Java
• C++
• Python
• Go
• Javascript
• C#

• class Solution {
      public int rangeBitwiseAnd(int left, int right) {
          while (left < right) {
              right &= (right - 1);
          }
          return right;
      }
  }
  

• class Solution {
  public:
      int rangeBitwiseAnd(int left, int right) {
          while (left < right) {
              right &= (right - 1);
          }
          return right;
      }
  };
  

• class Solution:
      def rangeBitwiseAnd(self, left: int, right: int) -> int:
          while left < right:
              right &= right - 1
          return right
  
  

• func rangeBitwiseAnd(left int, right int) int {
  	for left < right {
  		right &= (right - 1)
  	}
  	return right
  }
  

• /**
   * @param {number} left
   * @param {number} right
   * @return {number}
   */
  var rangeBitwiseAnd = function (left, right) {
      while (left < right) {
          right &= right - 1;
      }
      return right;
  };
  
  

• public class Solution {
      public int RangeBitwiseAnd(int left, int right) {
          while (left < right) {
              right &= (right - 1);
          }
          return right;
      }
  }
  

All Problems

All Solutions