The question: Single Number Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? My analysis: Thi…

https://leetcode.com/problems/single-number/ Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?…

题目描述(面试常考题) 借助了异或的思想 class Solution { public: int singleNumber(vector<int>& nums) { ; ; i < nums.size() ; i++) ret = ret ^ nums[i]; return ret; /* 出现3次的情况借助了位运算的思想,相同的数 则 在int型的各32位都相等,所以32位中各位求和取余就可以得到结果 */ class Solution { public: int singl…

Leetccode 136 SingleNumber I Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 1.自己想到了先排序,再遍历数…

136. Single Number 除了一个数字,其他数字都出现了两遍. 用亦或解决,亦或的特点:1.相同的数结果为0,不同的数结果为1 2.与自己亦或为0,与0亦或为原来的数 class Solution { public: int singleNumber(vector<int>& nums) { if(nums.empty()) ; ; ;i < nums.size();i++) res ^= nums[i]; return res; } }; 137. Single N…

leetcode 136. Single Number Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 解题思路: 如果以线性复杂度和…

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 using extra memory? 分析 由上一题改动而来,LeetCode 136 Single Nu…

LeetCode 136. Single Number(只出现一次的数字)…

[LeetCode]137. Single Number II 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/single-number-ii/description/ 题目描述: Given an array of integers, every element appears three times except for one, which appears exactly once. Find that singl…

有时候我们遇到一行文字过多时必须固定文字的显示范围,但由于中英文所占字节数不一样,所以不能很好的用截取字符的方式去统一显示范围的大小,用TextField的getCharIndexAtPoint(x:Number, y:Number):int方法可以方便的实现: getCharIndexAtPoint(x:Number, y:Number):int   在 x 和 y 参数指定的位置返回从零开始的字符索引值.演示一个小例子: import flash.text.TextField; import…