- Sort Array By ParityGiven an array A of non-negative integers, return an array consisting of all the even elements of A, followed by all the odd elements of A.You may return any answer array that satisfies this condition.Example 1:Input: [3,1,2,4]Output: [2,4,3,1]The outputs [4,2,3,1], [2,4,1,3], and [4,2,1,3] would also be accepted.Note:1 <= A.length <= 50000 <= A[i] <= 5000题目地址这题相当简单，我用了一个额外的数组来存储结果，使用两个指针，一个从前往后，指明插入偶数的位置，一个从后往前，指明奇数插入的位置。java代码class Solution { public int[] sortArrayByParity(int[] A) { int[] result = new int[A.length]; int i=0; int j=A.length-1; for(int x:A){ if(x%2==0){ result[i++]=x; }else{ result[j–]=x; } } return result; }}