Python3解leetcode Binary Tree PathsAdd DigitsMove Zeroes
问题描述:
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:
主要是list的sort()函数的应用
代码:
def moveZeroes(self, nums: List[int]) -> None:
"""
Do not return anything, modify nums in-place instead.
"""
nums.sort(key = lambda x: x ==0)
key是sort()函数中的一个参数,该参数指定排序的元素。当前代码中排序元素就是nums中所有0元素,到最后所有0元素一组(新),除去0元素的其他元素一组(老),最终默认按照老-新的顺序将nums重新排序
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