This is the 19th day of my participation in the Gwen Challenge in November. Check out the details: The last Gwen Challenge in 2021.

Title description:

412. Fizz Buzz – LeetCode (leetcode-cn.com)

If you are given an integer n, find the Fizz Buzz of each integer from 1 to n, and return the result with an array of strings (subscript starting from 1) :

  • answer[i] == "FizzBuzz"ifiAt the same time is3 和 5Multiples.
  • answer[i] == "Fizz"ifi 是 3Multiples.
  • answer[i] == "Buzz"ifi 是 5Multiples.
  • answer[i] == iIf none of the above conditions are met.

 

The sample a

Input: n = 3 Output: ["1","2","Fizz"]Copy the code

Example 2

Input: n = 5 Output: ["1","2","Fizz","4","Buzz"]Copy the code

Example 3

Input: n = 15 output: [" 1 ", "2", "Fizz", "4", "Buzz", "Fizz", "7", "eight" and "Fizz," "Buzz", "11", "Fizz", "13", 14 ", "FizzBuzz"]Copy the code

Tip:

  • 1 <= n <= 10^4

Thought analysis

simulation

Regardless of the background of the problem, this is really just a simple problem of converting an int array to an array of strings.

With the API, one map will do.

We iterate through 1 to n, converting to Fizz when it’s just a multiple of 3, converting to Buzz when it’s just a multiple of 5, and FizzBuzz when it’s both a multiple of 3 and a multiple of 5. If none of these are satisfied, we return to the original number.

The logic is very simple and clear, just look at the code.

AC code

class Solution {
    fun fizzBuzz(n: Int): List<String> {
        val answer = ArrayList<String>()
        for(i:Int in 1..n) {
            var temp:String = ""
            if(i%3= =0) {
                temp +="Fizz"
            }
            if(i%5= =0) {
                temp +="Buzz"
            }
            if(temp == "") {
                temp += i;
            }
            answer.add(temp);
        }
        return answer
    }
}

Copy the code

conclusion

The story behind the FizzBuzz than this problem and mean blog.codinghorror.com/why-cant-pr…

FizzBuzz and write code for “10,000” details

Look, it does make sense, everything comes from life, leetcode also.

reference

Fizz Buzz – Fizz Buzz – LeetCode (leetcode-cn.com)

Fizz Buzz – LeetCode (leetcode-cn.com)