1385. Find the Distance Value Between Two Arrays

class Solution:
    def findTheDistanceValue(self, arr1: List[int], arr2: List[int], d: int) -> int:
        arr1.sort()
        arr2.sort()
        i = j = 0
        ret = 0
        while i < len(arr1) and j < len(arr2):
            if (abs(arr1[i]  -  arr2[j])) <= d:
                i += 1
                ret += 1
            elif arr1[i] < arr2[j]:
                i += 1
            else:
                j += 1
        return len(arr1) - ret