448. Find All Numbers Disappeared in an Array
Đề Bài
Given an array nums of n integers where nums[i] is in the range [1, n], return an array of all the integers in the range [1, n] that do not appear in nums.
Example 1:
Input: nums = [4,3,2,7,8,2,3,1] Output: [5,6]
Example 2:
Input: nums = [1,1] Output: [2]
Constraints:
n == nums.length1 <= n <= 1051 <= nums[i] <= n
Follow up: Could you do it without extra space and in O(n) runtime? You may assume the returned list does not count as extra space.
Lời Giải
Python
0448-find-all-numbers-disappeared-in-an-array.py
class Solution:
def findDisappearedNumbers(self, nums: List[int]) -> List[int]:
n = len(nums)
nums = set(nums)
return [num for num in range(1, n + 1) if num not in nums]