"""
移除元素
"""
from typing import List


class Solution:
    def removeElement(self, nums: List[int], val: int) -> int:
        left = 0
        for index in range(0, len(nums)):
            if nums[index] != val:
                nums[left] = nums[index]
                left += 1
        return left


if __name__ == '__main__':
    result = Solution().removeElement([2], 3)
    print(result)