The Roman numeral system is an ancient way of representing numbers. The base symbols are I (1), V (5), X (10), L (50), C (100), D (500) and M (1000).
Questions tagged [roman-numerals]
273 questions
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1 answer
Need help writing an int to roman numeral converter using only if, if else, and switch statements
Here is the code:
public String ToRoman(int number)
{
if ((number < 1 || (number > 3999)))
if (number >= 1000) return "M" + ToRoman(number - 1000);
if (number >= 900) return "CM" + ToRoman(number - 900);
if (number…
user2840309
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votes
2 answers
I was doing this question Roman numerals, i don't understand exactly what I did wrong or how to solve this, can someone please explain this to me?
I was expecting 3 when entering III but I keep on getting 1 and the funny thing is i think it is only happening with a combination of the same roman letters because II is giving me back 2 like i wanted LVIII is giving me 56 instead of 58, but…
WeirdPanda
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votes
2 answers
Why does the if/else if approach give a wrong answer for the Roman To integer conversion question? This is a question from leetcode
This is the question that I am referring to:
https://leetcode.com/problems/roman-to-integer/
And this is the code that I have used for the following:
int romanToDecimal(string &str) {
int num=0;
for(int i=0; i
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votes
1 answer
Roman numerical generator
I was trying to come up with a roman numerical generator in Javascript and I found this on Stack Overflow. I passes all tests but I cannot figure out how it works. I would really appreciate a nice description what is going on in this code:
let…
Harry_C
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votes
1 answer
C program to display Roman numeral till n
I made up this problem for myself. This code prints integer numbers up to n in Romans. The code works fine. Is there any way to make it shorter and more efficient? Also, point out any mistakes made.
#include
void roman(int num)
{
…
pexeixv
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3 answers
Conversion of integers to Roman numerals (python)
I understand there were many similar questions being asked on this topic. But I still have some doubts need to be clear.
def int_to_roman(input):
if type(input) != type(1):
raise TypeError, "expected integer, got %s" % type(input)
…
tby
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votes
2 answers
Roman numbers to letters
How can I translate or process a roman number to a decimal number in words and vice versa? I want to do this in C. The idea is to get the number or the letters and process it.
Here is an example:
MDXXIII = One thousand five hundred and…
fullmoon
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votes
1 answer
check for the validity of a roman number (difficult)
I want to write a function to check if a given string in roman presentation is correct or not. They are a lot of cases of non allowed combinations : (I assume that the given string will represent a number between 1 and 3999)
We can't have the same…
salamanka44
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votes
3 answers
Having Trouble Converting Roman Numeral to Integer in Python
Not quite sure what I'm doing wrong. Using Python 3.2 Get the issue:
TypeError: list indices must be integers, not list
Here's my code.
print('Please input your first Roman Numeral.')
ri1 = input()
def romantointeger(x):
conversion =…
Max Goldstein
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votes
1 answer
converting roman numerals to integer- unclear about variables in leetcode question 13 solution
I know s is the string of roman numerals but because I don't know what i stand for, I am not sure what s[i] means. I am trying to understand the solution that is posted line by line, but am stuck with this specific part. All help is appreciated, I…
adiligentlearner
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votes
2 answers
Can someone explain me this code
I need an explanation for this tiny java code.
decimalNumber is a variable for user input and M for roman numeral 1000
This is a part of a roman numeral converter:
m = decimalNumber / 1000;
decimalNumber = decimalNumber % 1000;
F. Pajic
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votes
2 answers
Checking Errors of Roman Numerals Given A Set of Rules
So for my comp sci class I was tasked with adding, subtracting, dividing, and multiplying Roman Numerals if they pass 12 rules that I have been given.
I created a 13 element boolean array to keep track of which rules were broken. I created a…
Zack Sloan
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3 answers
Why does this JavaScript switch statement (which is inside a for loop) keep it's values from a previous iteration?
function convertToRoman(num) {
//seperate the number in to singular digits which are strings and pass to array.
var array = ("" + num).split(""),
arrayLength = array.length,
romStr = "";
//Convert the strings in the array to…
Tom
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votes
1 answer
Integer to Roman Numeral. I dont understand how to call the methods back to main. i am stuck here and need some assistance
public static void main(String[] args) {
// Given a Scanner as input, prompts the user to input a number between 1 and 3999.
// Checks to make sure the number is within range, and provides an error message until
// the user provides a value…
osubucs28
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votes
1 answer
C++ Roman Numeral Converter output from?
So this program is supposed to output to the console "Enter a negative number to end. Enter an arabic number between 1 and 3999:" then you give it your number, it breaks it down and converts it. I am getting output that looks like this
1
9
8
4
and…
ShadyLadyStacie
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