def removeElement(nums, val):
    """
    :type nums: List[int]
    :type val: int
    :rtype: int
    """
    k = 0
    for i in range(len(nums)):
        if val != nums[i]:
            k += 1
        else:
            nums[i] = None
    print(k)
    return k

# removeElement([0,1,2,2,3,0,4,2], 2)
removeElement([3,2,2,3], 3)