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Write a function that add two numbers A and B. You should not use + or any arithmetic operators.
分析：
典型的Bit Operation.
1 class Solution { 2 /* 3 * param a: The first integer 4 * param b: The second integer 5 * return: The sum of a and b 6 */ 7 public int aplusb(int a, int b) { 8 if (a == 0) return b; 9 int sum = a ^ b; 10 int carry = (a & b) << 1; 11 return aplusb(carry, sum); 12 } 13 };
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原文地址：http://www.cnblogs.com/beiyeqingteng/p/5645569.html
