[LintCode] Flip Bits
Determine the number of bits required to flip if you want to convert integer n to integer m.
Both n and m are 32-bit integers.
Example
Given n = 31
(11111), m = 14
(01110), return 2
.
1 class Solution { 2 /** 3 *@param a, b: Two integer 4 *return: An integer 5 */ 6 public static int bitSwapRequired(int a, int b) { 7 int cnt = 0; 8 for(int i = 0; i < Integer.SIZE; i++){ 9 if(((a >>> i) & 1) != ((b >>> i) & 1)){ 10 cnt++; 11 } 12 } 13 return cnt; 14 } 15 }
Related Problems
Rotate Bits - Left
Guess Number Game II