import java.util.*; public class Solution { /** * * @param A int整型一维数组 * @return int整型 */ public int singleNumber (int[] A) { // write code here int res = A[0]; for (int i = 1; i < A.length;i++) { res^=A[i]; } return res; } }
import java.util.*; public class Solution { /** * * @param A int整型一维数组 * @return int整型 */ public int singleNumber (int[] A) { // write code here int res = A[0]; for (int i = 1; i < A.length;i++) { res^=A[i]; } return res; } }