Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1as one sorted array.
Note:
- The number of elements initialized in nums1 and nums2 are m and nrespectively.
- You may assume that nums1 has enough space (size that is greater or equal to m + n) to hold additional elements from nums2.
Example:
Input:
nums1 = [1,2,3,0,0,0], m = 3
nums2 = [2,5,6], n = 3
Output: [1,2,2,3,5,6]这道题很蛋疼，它是预留足够的空间供你去使用，感觉像是合并排序，又不是那回事，仅OJ使用
class Solution:
def merge(self, nums1: List[int], m: int, nums2: List[int], n: int) -> None:
"""
Do not return anything, modify nums1 in-place instead.
"""
length=len(nums1)-1
m-=1
n-=1
while m>=0 and n>=0:
if nums1[m]>nums2[n]:
nums1[length]=nums1[m]
m-=1
else:
nums1[length]=nums2[n]
n-=1
length-=1
while n>=0:
nums1[length]=nums2[n]
n-=1
length-=1
