数据结构算法操作试题(C++/Python)——移除元素

class Solution(object):
    def removeElement(self, nums, val):
        """
        :type nums: List[int]
        :type val: int
        :rtype: int
        """
        tmp_index = 0
        if not nums: return 
        for i in range(len(nums)):
            if nums[i] !=  val:
                nums[tmp_index] = nums[i]
                tmp_index += 1
        return tmp_index