[LeetCode] Single Number

阿新 • • 發佈：2017-07-10

could implement col algo public xtra arr com note

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?

給定一個數組，其中只有一個數字出現了1次，其他的數字都出現了2次。求出這個出現一次的數字。這道題利用XOR進行求解，如果兩個數字相同，那麽它們的XOR為0，然而0與任何數XOR都是任何數。所以用0與數組中各個數XOR，最後的結果就是那個只出現一次的數字。

class Solution {
public:
    int singleNumber(vector<int>& nums) {
        int res = 0;
        for (int num : nums)
            res ^= num;
        return res;
    }
};
// 13 ms

[LeetCode] Single Number

[LeetCode] Single Number

could implement col algo public xtra arr com note Given an array of integers, every element appears twice except for one. Find that singl

LeetCode——Single Number

i++ entry 思路 etc 給定 size cep ret entryset Given an array of integers, every element appears twice except for one. Find that single

leetcode single-number

ole could subject ber 使用代碼 [] ron lin 題目描述 Given an array of integers, every element appears twice except for one. Find that single

[LeetCode]single-number

integer near csdn mem tail ext 滿足相同返回題目：Given an array of integers, every element appears twice except for one. Find that single one.

leetcode Single Number

Single Number 題目：https://leetcode.com/problems/single-number/ 一個數組中只有一個數字出現一次，其餘的數字都出現兩次，要求時間複雜度是O(n),空間複雜度O(1) public static void main(String[] a

LeetCode——Single Number（136）

Given a non-empty array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have

LeetCode Single Number II

Problem Given an array of integers, every element appears three times except for one, which appears exactly once. Find tha

[LeetCode] Single Number 單獨的數字

Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complexit

[LeetCode] Single Number II 單獨的數字之二

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 com

[LeetCode] Single Number III 單獨的數字之三

Given an array of numbers nums, in which exactly two elements appear only once and all the other elements appear exactly twice. Find the two elements tha

[leetcode] Single Number III

同Single Number，異或後按照得到的結果中bit位為1的將陣列分為兩組，結果必然各存在於這兩組中，分別異或得到結果。程式碼如下： vector<int> singleNumber(vector<int>& nums) {

LeetCode Single Number I & II 都符合兩個問題額外要求的通用解法與思考過程

Single Number Given an array of integers, every element appearstwiceexcept for one. Find that single one. Note: Your algorithm should ha

陣列中出現一次的兩個數 leetcode Single Number III

class Solution { public: vector<int> singleNumber(vector<int>& nums) { vector<int> res; if(nums.size()==0) return

【Leetcode】137. Single Number II

val tar urn arr ber and mos calc cal 題目： Given an array of integers, every element appears three times except for one. Find that single o

Leetcode 136. Single Number

ram splay eve could set tle without where 運算 Given an array of integers, every element appears twice except for one. Find that single one

[LeetCode] 137. Single Number II （位運算）

清零一次 .com blog 適用於 soft hat ever rip 傳送門 Description Given an array of integers, every element appears three times except for one, w

136. Single Number - LeetCode

problem i++ span pre key 遍歷數組 ddn bre ret Question 136.?Single Number Solution 思路：構造一個map，遍歷數組記錄每個數出現的次數，再遍歷map，取出出現次數為1的num public int

[LeetCode] 260. Single Number III 單獨數 III

[1] log obj rec 就是 its begin find self Given an array of numbers nums, in which exactly two elements appear only once and all the other e

[LeetCode] 137. Single Number II 單獨數 II

input .cn targe 單獨 sin logs eve tput controls Given a non-empty array of integers, every element appears three times except for one, whic

[leetcode]136.Single Number

eve leetcode 解法 length 基於出現的次數 ext 暴力表示題目 Given a non-empty array of integers, every element appears twice except for one. Find that s