[Swift]LeetCode412. Fizz Buzz

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Write a program that outputs the string representation of numbers from 1 to n.

But for multiples of three it should output 「Fizz」 instead of the number and for the multiples of five output 「Buzz」. For numbers which are multiples of both three and five output 「FizzBuzz」.

Example:

n = 15,

Return:
[
    "1",
    "2",
    "Fizz",
    "4",
    "Buzz",
    "Fizz",
    "7",
    "8",
    "Fizz",
    "Buzz",
    "11",
    "Fizz",
    "13",
    "14",
    "FizzBuzz"
]

---

寫一個程序，輸出從 1 到 n 數字的字符串表示。

1. 若是 n 是3的倍數，輸出「Fizz」；

2. 若是 n 是5的倍數，輸出「Buzz」；

3.若是 n 同時是3和5的倍數，輸出 「FizzBuzz」。

示例：

n = 15,

返回:
[
    "1",
    "2",
    "Fizz",
    "4",
    "Buzz",
    "Fizz",
    "7",
    "8",
    "Fizz",
    "Buzz",
    "11",
    "Fizz",
    "13",
    "14",
    "FizzBuzz"
]

---

 1 class Solution {
 2     func fizzBuzz(_ n: Int) -> [String] {
 3         var res:[String] = [String]()
 4         for i in 1...n
 5         {
 6             if i % 3 == 0 && i % 5 == 0
 7             {
 8                 res.append("FizzBuzz")
 9             }
10             else if  i % 5 == 0
11             {
12                 res.append("Buzz")
13             }
14             else if  i % 3 == 0
15             {
16                 res.append("Fizz")
17             }
18             else
19             {
20                 res.append("\(i)")
21             }            
22         }
23         return res
24     }
25 }

---

16ms

 1 class Solution {
 2     func fizzBuzz(_ n: Int) -> [String] {
 3         var res = [String]()
 4         for i in 1...n {
 5             if i % 3 != 0, i % 5 != 0 { res.append(String(i)) }
 6             else if i % 5 != 0 { res.append("Fizz") }
 7             else if i % 3 != 0 { res.append("Buzz") }
 8             else { res.append("FizzBuzz") }
 9         }
10         return res
11     }
12 }

---

20ms

 1 class Solution {
 2     func fizzBuzz(_ n: Int) -> [String] {
 3         
 4         var i = 1
 5         
 6         var fizzbuzz = [String]()
 7         
 8         while i <= n {
 9             if i % 3 == 0 && i % 5 == 0 {
10                 fizzbuzz.append("FizzBuzz")
11             } else if i % 3 == 0 {
12                 fizzbuzz.append("Fizz")
13             } else if i % 5 == 0 {
14                 fizzbuzz.append("Buzz")
15             } else {
16                 fizzbuzz.append(String(i))
17             }
18             i += 1
19         }
20         
21         return fizzbuzz
22         
23     }
24 }

---

20ms

 1 class Solution {
 2     func fizzBuzz(_ n: Int) -> [String] {
 3         var res = [String]()
 4         
 5         for i in 1...n {
 6             if i % 3 == 0 && i % 5 == 0 {
 7                 res.append("FizzBuzz")
 8             } else if i % 3 == 0 {
 9                 res.append("Fizz")
10             } else if i % 5 == 0 {
11                 res.append("Buzz")
12             } else {
13                res.append(String(i))
14             }
15         }
16         return res
17     }
18 }