Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime ...
题目: Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without us ...
2014-07-27 00:57 0 3233 推荐指数:
Given an array of integers, every element appears three times except for one. Find that single one. Note:Your algorithm should have a linear runtime ...
Single Number的加强班 有n个数字,除了一个只出现过一次,其他的都出现了3次! 出现两次我们知道就是xor下就木有啦,那3次怎么搞? 我们还是用二进制位的方式来思考。 那么这些位,除去出现过一次的那个后,其他的都是3的倍数!- -我们把所有位1的个数mod 3,那么剩下 ...
原题地址:http://oj.leetcode.com/problems/single-number-ii/ 题意:Given an array of integers, every element appears three times except for one. Find ...
题目和上题类似,这里给的数组仅有一个数出现一次,其他的出现3次。返回那个出现一次的数。 这题还是比较难想到的。不想上一题只要异或一下就可以了,不用额外操作。 法一:还是用map方法 ...
题目: Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear ...
Given a non-empty array of integers, every element appears three times except for one, which appears exactly once. Find that single one. Note ...
题目描述: 给定一个包含n个整数的数组,除了一个数出现一次外所有的整数均出现三次,找出这个只出现一次的整数。 题目来源: http://oj.leetcode.com/problems/single-number-ii ...
问题:找出只出现一次的数,其他数出现了三次分析:将数转化为二进制的位,数出现了三次相当于其对应的二进制上每个位置出现了3次,这里有个抽象的地方就是,例如数中包含1,3两个其二进制的第一位都包含1, ...