Java int到罗马
import java.util.TreeMap;
public class RomanNumber {
private final static TreeMap<Integer, String> map = new TreeMap<Integer, String>();
static {
map.put(1000, "M");
map.put(900, "CM");
map.put(500, "D");
map.put(400, "CD");
map.put(100, "C");
map.put(90, "XC");
map.put(50, "L");
map.put(40, "XL");
map.put(10, "X");
map.put(9, "IX");
map.put(5, "V");
map.put(4, "IV");
map.put(1, "I");
}
public final static String toRoman(int number) {
int l = map.floorKey(number);
if ( number == l ) {
return map.get(number);
}
return map.get(l) + toRoman(number-l);
}
}
整到罗马
# Python 3 program to convert Decimal
# number to Roman numbers.
import math
def integerToRoman(A):
romansDict = \
{
1: "I",
5: "V",
10: "X",
50: "L",
100: "C",
500: "D",
1000: "M",
5000: "G",
10000: "H"
}
div = 1
while A >= div:
div *= 10
div //= 10
res = ""
while A:
# main significant digit extracted
# into lastNum
lastNum = (A // div)
if lastNum <= 3:
res += (romansDict[div] * lastNum)
elif lastNum == 4:
res += (romansDict[div] +
romansDict[div * 5])
elif 5 <= lastNum <= 8:
res += (romansDict[div * 5] +
(romansDict[div] * (lastNum - 5)))
elif lastNum == 9:
res += (romansDict[div] +
romansDict[div * 10])
A = math.floor(A % div)
div //= 10
return res
# Driver code
print("Roman Numeral of Integer is:"
+ str(integerToRoman(3549)))