mirror of
https://github.com/autistic-symposium/master-algorithms-py.git
synced 2025-05-23 00:41:19 -04:00
Update and rename array-merge-inplace.py to merge_inplace.py
This commit is contained in:
parent
761c1f0670
commit
86a538032a
1 changed files with 1 additions and 18 deletions
|
@ -1,57 +0,0 @@
|
|||
#!/usr/bin/env python3
|
||||
# -*- coding: utf-8 -*-
|
||||
# author: bt3gl
|
||||
|
||||
"""
|
||||
You are given two integer arrays nums1 and nums2, sorted in non-decreasing order, and two
|
||||
integers m and n, representing the number of elements in nums1 and nums2 respectively.
|
||||
|
||||
Merge nums1 and nums2 into a single array sorted in non-decreasing order.
|
||||
|
||||
The final sorted array should not be returned by the function,
|
||||
but instead be stored inside the array nums1.
|
||||
To accommodate this, nums1 has a length of m + n, where the first m elements denote the elements
|
||||
that should be merged, and the last n elements are set to 0 and should be ignored. nums2 has a length of n.
|
||||
|
||||
"""
|
||||
|
||||
def merge(big_list: list[int], m: int, small_list: list[int], n: int) -> None:
|
||||
"""
|
||||
Do not return anything, modify nums1 in-place instead.
|
||||
"""
|
||||
|
||||
index_big, index_small, index_backward = m - 1, n - 1, m + n - 1
|
||||
|
||||
while index_big >= 0 and index_small >= 0:
|
||||
|
||||
if small_list[index_small] > big_list[index_big]:
|
||||
big_list[index_backward] = small_list[index_small]
|
||||
index_small -= 1
|
||||
else:
|
||||
big_list[index_backward] = big_list[index_big]
|
||||
index_big -= 1
|
||||
|
||||
index_backward -= 1
|
||||
|
||||
while index_backward >= 0 and index_big >= 0:
|
||||
big_list[index_backward] = big_list[index_big]
|
||||
index_backward -= 1
|
||||
index_big -= 1
|
||||
|
||||
while index_backward >= 0 and index_small >= 0:
|
||||
big_list[index_backward] = small_list[index_small]
|
||||
index_backward -= 1
|
||||
index_small -= 1
|
||||
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
|
||||
nums1 = [1,2,3,0,0,0]
|
||||
m = 3
|
||||
nums2 = [2,5,6]
|
||||
n = 3
|
||||
|
||||
merge(nums1, m, nums2, n)
|
||||
print(nums1)
|
||||
# [1,2,2,3,5,6]
|
Loading…
Add table
Add a link
Reference in a new issue