Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once.
Find all the elements of [1, n] inclusive that do not appear in this array.
Could you do it without extra space and in O(n) runtime? You may assume the returned list does not count as extra space.
Example:
Input: [4,3,2,7,8,2,3,1] Output: [5,6]
public class Solution { public List findDisappearedNumbers(int[] nums) { List res = new ArrayList(); int size = 0; for(int i=0;isize){ size = nums[i]; } } if(nums.length > size){ size = nums.length; } int[] arr = new int[size+1]; for(int i=0;i This siteOriginal articleAll follow "Attribution-NonCommercial-ShareAlike 4.0 License (CC BY-NC-SA 4.0)Please retain the following annotations when sharing or adapting:
Original author:Jake Tao,source:"LeetCode – 448. Find All Numbers Disappeared in an Array"
