[LeetCode] 13. Roman to Integer (Kotlin)

https://leetcode.com/problems/roman-to-integer/

 

Roman to Integer - LeetCode

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class Solution {
    fun romanToInt(s: String): Int {
        var answer = 0
        for (i: Int in s.indices) {
            answer += if (i == s.length - 1) {
                RomanNumerals.get(s[i])
            } else {
                val current = RomanNumerals.get(s[i])
                val next = RomanNumerals.get(s[i + 1])
                if (current >= next) {
                    +current
                } else {
                    -current
                }
            }
        }
        return answer
    }
}

object RomanNumerals {

    private val table = mapOf(
        'I' to 1,
        'V' to 5,
        'X' to 10,
        'L' to 50,
        'C' to 100,
        'D' to 500,
        'M' to 1000
    )

    fun get(roman: Char): Int {
        return requireNotNull(table[roman])
    }
}

https://github.com/960813/leetcode-problems/commit/3b639d2d19de7d17305e0e9258214066a543444f

 

[013] Kotlin · 960813/leetcode-problems@3b639d2

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