[LeetCode/Kotlin]Easy - 58. Length of Last Word

Length of Last Word - LeetCode

문제

Given a string s consisting of words and spaces, return the length of the last word in the string.

A word is a maximal

substring

consisting of non-space characters only.

Example 1:

Input: s = "Hello World"
Output: 5
Explanation: The last word is "World" with length 5.

Example 2:

Input: s = "   fly me   to   the moon  "
Output: 4
Explanation: The last word is "moon" with length 4.

Example 3:

Input: s = "luffy is still joyboy"
Output: 6
Explanation: The last word is "joyboy" with length 6.

Constraints:

• 1 <= s.length <= 104
• s consists of only English letters and spaces ' '.
• There will be at least one word in s.

풀이

나의 풀이법

풀이 접근 과정

그냥 “ “로 split한 뒤, 가장 뒤에 있는 글자의 개수만 리턴시키면 됐다.

만약 공백으로 찬 배열이면 없애버리고 !

아주 간단했던 문제.

최종 소스코드

class Solution {
    fun lengthOfLastWord(s: String) = s.split(" ").filter { it != " " && it != "" }.last().length
}