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Lenguaje
Java
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Descripción
Pide un número romano y lo convierte a notación arábiga
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import java.util.Scanner;
public class Arabigo {
public static final String[][] romanos = {
{"M", "MM", "MMM"},
{"C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"},
{"X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"},
{"I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"}
};
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int arabigo = 0, i, j, tamano, multiplo = 1000;
System.out.print("Ingrese un n\243mero romano: ");
String original = in.nextLine().toUpperCase();
String romano = original;
for (i = 0; i < romanos.length; i++) {
for (j = romanos[i].length-1; j>=0; j--) {
tamano = romanos[i][j].length();
if (tamano <= romano.length() && romanos[i][j].equals(romano.substring(0, tamano))) {
arabigo += (j + 1) * multiplo;
romano = romano.substring(tamano);
break;
}
}
multiplo /= 10;
}
if (romano.length() == 0)
System.out.println("\n" + original + " = " + arabigo + "\n");
else
System.out.println("\nEl n\243mero romano '" + original + "' es incorrecto.\n");
}
}
public class Arabigo {
public static final String[][] romanos = {
{"M", "MM", "MMM"},
{"C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"},
{"X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"},
{"I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"}
};
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int arabigo = 0, i, j, tamano, multiplo = 1000;
System.out.print("Ingrese un n\243mero romano: ");
String original = in.nextLine().toUpperCase();
String romano = original;
for (i = 0; i < romanos.length; i++) {
for (j = romanos[i].length-1; j>=0; j--) {
tamano = romanos[i][j].length();
if (tamano <= romano.length() && romanos[i][j].equals(romano.substring(0, tamano))) {
arabigo += (j + 1) * multiplo;
romano = romano.substring(tamano);
break;
}
}
multiplo /= 10;
}
if (romano.length() == 0)
System.out.println("\n" + original + " = " + arabigo + "\n");
else
System.out.println("\nEl n\243mero romano '" + original + "' es incorrecto.\n");
}
}