Find All Numbers Disappeared in an Array

Posted on | In |
  • Source : Link
  • Author : Han
  • Date : 2022-01-06

Problems

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

1
2
Input: nums = [4,3,2,7,8,2,3,1]
Output: [5,6]

Example 2

1
2
Input: nums = [1,1]
Output: [2]

Solution

1
2
3
4
5
class Solution {
    fun findDisappearedNumbers(nums: IntArray): List<Int> {
        return  nums.let { num -> (1..nums.size).filter { it !in num} }
    }
}