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.
Example:
Input:
[0,1,0,3,12]
Output:
[1,3,12,0,0]
Note:
- You must do this in-place without making a copy of the array.
- Minimize the total number of operations.
思路:排序的题用python自带函数sort()很方便,一行就可以解决.注意排序是从False到True的,所以不需要reverse=True.
class Solution:
def moveZeroes(self, nums):
"""
:type nums: List[int]
:rtype: void Do not return anything, modify nums in-place instead.
"""
nums.sort(key = lambda x:x==0)
还有这种很直观的方法,速度很慢.注意的是这里不会出现无限循环(列表一直删除0再添加0)
class Solution:
def moveZeroes(self, nums):
"""
:type nums: List[int]
:rtype: void Do not return anything, modify nums in-place instead.
"""
for i in nums:
if i==0:
nums.remove(i)
nums.append(i)