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137. Single Number II(js)

时间:2019-05-31 00:46:17      阅读:158      评论:0      收藏:0      [点我收藏+]

标签:ber   出现   color   with   for   lin   sum   input   put   

137. Single Number II

Given a non-empty array of integers, every element appears three times except for one, which appears exactly once. Find that single one.

Note:

Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?

Example 1:

Input: [2,2,3,2]
Output: 3

Example 2:

Input: [0,1,0,1,0,1,99]
Output: 99
题意:给定一个数组,存在唯一一个数字只出现一次,其他数字出现3次,找到这个只出现一次的数字
代码如下:
/**
 * @param {number[]} nums
 * @return {number}
 */
var singleNumber = function(nums) {
    let res=0;
    for(let i=0;i<32;i++){
        let sum=0;
        for(let j=0;j<nums.length;j++){
            sum+=(nums[j]>>i)&1;
        }
        res|=(sum%3)<<i;
    }
    return res;
};

 

137. Single Number II(js)

标签:ber   出现   color   with   for   lin   sum   input   put   

原文地址:https://www.cnblogs.com/xingguozhiming/p/10952730.html

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