27. Remove Element - LeetCode Solution

class Solution:
    def removeElement(self, nums: List[int], val: int) -> int:
        count = len(nums)
        if len(nums) == 0:
            return 0
        
        
        
        ptr1 = 0
        ptr2 = len(nums) -1
        
        for i in range(len(nums)):
            if nums[i] == val:
                count-=1
        
        while ptr1 != ptr2:
            if nums[ptr1] == val:
                nums[ptr1] , nums[ptr2] = nums[ptr2], nums[ptr1]
                ptr2-=1
     
            else:
                ptr1+=1
                
                
                
        
        return count