罗马数字转整数

package main

import "fmt"

func romanToInt(s string) int {
    romanMap := map[byte]int{
        'I': 1,
        'V': 5,
        'X': 10,
        'L': 50,
        'C': 100,
        'D': 500,
        'M': 1000,
    }

    result := 0
    prevValue := 0

    for i := len(s) - 1; i >= 0; i-- {
        currentValue := romanMap[s[i]]

        if currentValue < prevValue {
            result -= currentValue
        } else {
            result += currentValue
        }

        prevValue = currentValue
    }

    return result
}

func main() {
    romanNumeral := "IX"

    result := romanToInt(romanNumeral)

    fmt.Printf("罗马数字 %s 转换为整数是 %d\n", romanNumeral, result)
}