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  1. func findDisappearedNumbers(_ nums: [Int]) -> [Int] {
  2.     var nums = nums
  3.  
  4.     for i in 0..<nums.count{
  5.         let j = abs(nums[i]) - 1
  6.  
  7.         if(nums[j] > 0) {
  8.             nums[j] = -nums[j]    
  9.         }
  10.     }
  11.  
  12.     var list = [Int]()
  13.  
  14.     for i in 0..<nums.count where nums[i] > 0 {
  15.         list.append(i + 1)
  16.     }
  17.  
  18.     return list
  19. }
  20.  
  21. print(findDisappearedNumbers([4,3,2,7,8,2,3,1]))
Success #stdin #stdout 0s 7648KB
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Standard input is empty
stdout
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[5, 6]
https://ideone.com/oGzioZ
language:
Swift (swift 4.2.2)
created:
5 years ago
visibility:
public

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