LeetCode 27移除元素(JAVA)

class Solution {
    public int removeElement(int[] nums, int val) {
        // 获取数组长度
        int len = nums.length;
        for (int i = 0; i < len; ) {
            if (nums[i] == val) {
                nums[i] = nums[len - 1];
                len--;
            } else {
                i++;
            }

        }
        return len;
    }
}