27.remove-element.java

/*
 * @lc app=leetcode id=27 lang=java
 *
 * [27] Remove Element
 */

// @lc code=start
class Solution {
    public int removeElement(int[] nums, int val) {
        int slow = 0, fast = 0;
        while (fast < nums.length) {
            if (nums[fast] == val) {
                fast++;
            } else {
                nums[slow] = nums[fast];
                slow++;
                fast++;
            }
        }
        return slow;
    }
}
// @lc code=end