java代码如下: publicclassSolution {publicintsingleNumber(int[] nums) {if(nums==null|| nums.length==0){return0; }intsingleNumber=nums[0];for(inti=1;i<nums.length;i++){ singleNumber=singleNumber ^nums[i]; }returnsingleNumber; } } 以下内容摘自他人博客 本题扩展 1.一个数组中有两个元素...
class Solution { public: int singleNumber(int A[], int n) { int res=0; for(int i=0;i<n;i++){ res=res^A[i]; } return res; } };Java的位运算Java中定义了位运算符,应用于整数类型(int),长整型(long),短整型(short),字符型(char),和字节型(byte)等类型。 位运算符作用在所有的位上...
Java Code:class Solution { public int singleNumber(int[] nums) { int res = 0; for(int n:nums) { // 异或 res ^= n; } return res; }} Python Code:class Solution: def singleNumber(self, nums: List[int]) -> int: single_number = 0 for num ...
public class Solution { public int singleNumber(int[] A) { Map<Integer,Integer> map=new HashMap<Integer,Integer>(); for(int i=0;i<A.length;i++){ if(map.get(A[i])==null){ map.put(A[i],1); } else map.put(A[i],2); ...
先给出具体实现,引用自proron's Java bit manipulation solution,我修改了部分代码以便于理解: public class Solution { public int[] singleNumber(int[] nums) { int AXORB = 0; for (int num : nums) { AXORB ^= num; } // pick one bit as flag ...
publicclassSolution{publicintsingleNumber(int[]A){// Solution A// return singleNum_Xor(A);// Solution BreturnsingleNum_BitCompare(A);// Solution C// return singleNum_Map(A);}/// Solution A: Xor//privateintsingleNum_Xor(int[]A){inttoReturn=0;for(inti:A){toReturn=toReturn^i;}retu...
下面的思路借鉴自讨论区(https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/discuss/91049/Java-O(n%29-solution-using-bit-manipulation-and-HashMap)的一个解法。现在 Medium 的题目居然也需要看解答了,叹气。 代码语言:javascript 代码运行次数:0 运行 复制 class Solution { public int...
Github Page Please Donate leetcode TODO Evaluate the Time and Space complexity of each solution Proof the code's correctness if needed Find better solutions Rewrite code with Java8 lambdaAbout leetcode Solutions.java 250 / 269 (Algorithms) leetcode.tgic.me/ Resources Readme Activity Stars ...
Java 实现 class Solution { public int singleNumber(int[] nums) { HashMap<Integer, Integer> hashmap = new HashMap<>(); for (int num : nums) hashmap.put(num, hashmap.getOrDefault(num, 0) + 1); for (int k : hashmap.keySet()) if (hashmap.get(k) == 1) return k; return ...
Java版本 class Solution { public int singleNumber(int[] nums) { int x = 0; for (int num : nums) // 1. 遍历 nums 执行异或运算 x ^= num; return x; // 2. 返回出现一次的数字 x } } 说明: 通过遍历数组中的每个数字,并使用异或运算将结果保存在result变量中,最终返回result即可。 C语言...