LeetCode Remove Element

Given an array and a value, remove all instances of that value in place and return the new length.

Do not allocate extra space for another array, you must do this in place with constant memory.

The order of elements can be changed. It doesn’t matter what you leave beyond the new length.

Example:

Given input array nums = [3,2,2,3], val = 3

Your function should return length = 2, with the first two elements of nums being 2.

/**
* 去除数组中等于给定的数
* 新数组中元素个数小于等于原数组
* Created by ustc-lezg on 16/4/6.
*/
public class Solution {

public int removeElement(int[] nums, int val) {
int index = 0;
for (int i = 0, len = nums.length; i < len; i++) {
if (nums[i] != val) {
nums[index++] = nums[i];
}
}
return index;
}

}