[Leetcode] 27 remove Element

Https://oj.leetcode.com/problems/remove-element/

Http://fisherlei.blogspot.com/2012/12/leetcode-remove-element.html

public class Solution {    public int removeElement(int[] A, int elem) {                // The order can be changed.        // Use 2 pointers.        // One to iterate the array,        // One to copy the last elements back to array.        if (A == null || A.length == 0)            return 0;                int start = 0;        int end = A.length - 1;        while (start <= end)        {            int v = A[start];            if (v == elem)            {                // Copy A[end] to A[start]                A[start] = A[end];                end --;            }            else            {                start ++;            }        }        return end + 1;    }}

[Leetcode] 27 remove Element