标签：ref span function 思路 and com htm blog ===
题意是不用加减法做到对两个整数求和。这里我参考了grandyang大神的思路，就不过多解释了，https://www.cnblogs.com/grandyang/p/5631814.html
时间O(1)
空间O(1)
1 /** 2 * @param {number} a 3 * @param {number} b 4 * @return {number} 5 */ 6 var getSum = function(a, b) { 7 if (a === 0) { 8 return b; 9 } 10 if (b === 0) { 11 return a; 12 } 13 while (b !== 0) { 14 let carry = a & b; 15 a = a ^ b; 16 b = carry << 1; 17 } 18 return a; 19 };
[LeetCode] 371. Sum of Two Integers
标签：ref span function 思路 and com htm blog ===
原文地址：https://www.cnblogs.com/aaronliu1991/p/11695656.html
