Given an integer array nums, move all 0's to the end of it while maintaining the relative order of the non-zero elements.

Note that you must do this in-place without making a copy of the array.

 

Example 1:

Input: nums = [0,1,0,3,12]
Output: [1,3,12,0,0]

Example 2:

Input: nums = [0]
Output: [0]

 

Constraints:

  • 1 <= nums.length <= 104
  • -231 <= nums[i] <= 231 - 1

 

Follow up: Could you minimize the total number of operations done?




 class Solution:
    def moveZeroes(self, nums: List[int]) -> None:
        """
        Do not return anything, modify nums in-place instead.
        """
#         zeros = 0
#         l = len(nums)

#         for i in range(l):
#             if nums[i] == 0:
#                 zeros+=1
#             else:
#                 nums[i-zeros] = nums[i]

#         while zeros!=0:
#             nums[l-zeros]=0
#             zeros-=1

        l = len(nums)
        i = 0
        while i<l:
            if nums[i] == 0:
                nums.pop(i)
                nums.append(0)
                l-=1
            else:
                i+=1

Random Note


LRUCache can be implemented - Hashmap + Doubly Linked List - Python Dict/OrderDict - HashMap + List At least I've tested them for fun :p