# Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.
# Python 1
class Solution:
def moveZeroes(self, nums: List[int]) -> None:
"""
type nums: List[int]
Do not return anything, modify nums in-place instead.
"""
count = nums.count(0)
nums[:] = [i for i in nums if i != 0]
nums += [0] * count
# Python 2
class Solution:
def moveZeroes(self, nums: List[int]) -> None:
"""
type nums: List[int]
Do not return anything, modify nums in-place instead.
"""
j = 0
for i in range(len(nums)):
if nums[i] != 0:
nums[i], nums[j] = nums[j], nums[i]
j += 1
- nums[:] 属于浅拷贝。列表内的元素内存地址并未发生改变。
