Basic Roman Numerals resolve

esa-kian · esa-kian · commit 545dd70aa1d5 · 2024-01-29T15:45:34.000Z
diff --git a/src/easy/BasicRomanNumerals.go b/src/easy/BasicRomanNumerals.go
@@ -0,0 +1,45 @@
+package main
+
+import "fmt"
+
+// BasicRomanNumerals returns the decimal equivalent of the Roman numeral given
+func BasicRomanNumerals(str string) int {
+	// Define a map to store the values of each Roman numeral
+	romanValues := map[byte]int{
+		'I': 1,
+		'V': 5,
+		'X': 10,
+		'L': 50,
+		'C': 100,
+		'D': 500,
+		'M': 1000,
+	}
+
+	// Initialize the result
+	result := 0
+
+	// Iterate through the Roman numeral string
+	for i := 0; i < len(str); i++ {
+		// Get the value of the current Roman numeral
+		value := romanValues[str[i]]
+
+		// If the current numeral is smaller than the next numeral, subtract its value
+		if i < len(str)-1 && romanValues[str[i]] < romanValues[str[i+1]] {
+			result -= value
+		} else {
+			// Otherwise, add its value
+			result += value
+		}
+	}
+
+	return result
+}
+
+func main() {
+	// Test cases
+	result1 := BasicRomanNumerals("MDCXXI")
+	fmt.Println(result1) // Output: 24
+
+	result2 := BasicRomanNumerals("XLVI")
+	fmt.Println(result2) // Output: 46
+}
