Sort Array By Parity LeetCode Solution - The Coding Shala

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 In this post, we will learn how to solve LeetCode's Sort Array By Parity Problem and will implement its solution in Java.

Sort Array By Parity Problem

Given 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.

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.

Practice this problem on LeetCode(Click Here).

Sort Array By Parity Java Solution

Approach 1

Java Program: 

class Solution {
    public int[] sortArrayByParity(int[] A) {
        int i = 0, j=A.length-1;
                int tmp = A[i];
                A[i] = A[j];
                A[j] = tmp;
            if(A[i]%2==0) i++;
            if(A[j]%2==1) j--;
        return A;

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