Contents.swift

/**
 A self-dividing number is a number that is divisible by every digit it contains.

 For example, 128 is a self-dividing number because 128 % 1 == 0, 128 % 2 == 0, and 128 % 8 == 0.
 A self-dividing number is not allowed to contain the digit zero.

 Given two integers left and right, return a list of all the self-dividing numbers in the range [left, right].

  

 Example 1:
 Input: left = 1, right = 22
 Output: [1,2,3,4,5,6,7,8,9,11,12,15,22]
 
 Example 2:
 Input: left = 47, right = 85
 Output: [48,55,66,77]
  

 Constraints:
 - 1 <= left <= right <= 10^4
 */
class Solution {
    func selfDividingNumbers(_ left: Int, _ right: Int) -> [Int] {
        var result = [Int]()
        for i in left...right {
            let element = String(i)
            for (j, c) in element.enumerated() {
                if c.wholeNumberValue! == 0 {
                    break
                }
                if i % c.wholeNumberValue! != 0 {
                    break
                }
                if j == element.count - 1 {
                    result.append(i)
                }
            }
        }
        return result
    }
}

let s = Solution()
let r = s.selfDividingNumbers(1, 22)
print(r)