如何在随机列表中找到两个数字之间的最短距离，而不对列表进行排序。我的代码如下所示，我需要另一种快速方法

def find_shortest_distance(nums, num1, num2):
    min_distance = float('inf')
    last_index = None

    for i, num in enumerate(nums):
        if num == num1 or num == num2:
            if last_index is not None and nums[last_index] != num:
                min_distance = min(min_distance, i - last_index)
            last_index = i

    return min_distance