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how to convert numbers to roman numerals in javascript

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Delvi Luis Perez Mora answered on November 15, 2021 Popularity 1/10 Helpfulness 1/10

answer how to convert numbers to roman numerals in javascript

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how to convert numbers to roman numerals in javascript

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function convertToRoman(num) {
  var roman = {
    M: 1000,
    CM: 900,
    D: 500,
    CD: 400,
    C: 100,
    XC: 90,
    L: 50,
    XL: 40,
    X: 10,
    IX: 9,
    V: 5,
    IV: 4,
    I: 1
  };
  var str = '';

  for (var i of Object.keys(roman)) {
    var q = Math.floor(num / roman[i]);
    num -= q * roman[i];
    str += i.repeat(q);
  }

  return str;
}

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript numbers roman-numerals

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Contributed on May 01 2022

Delvi Luis Perez Mora

0 Answers Avg Quality 2/10

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integer to roman javascript

Comment

function convertToRoman(num) {
  var roman = {
    M: 1000,
    CM: 900,
    D: 500,
    CD: 400,
    C: 100,
    XC: 90,
    L: 50,
    XL: 40,
    X: 10,
    IX: 9,
    V: 5,
    IV: 4,
    I: 1
  };
  var str = '';

  for (var i of Object.keys(roman)) {
    var q = Math.floor(num / roman[i]);
    num -= q * roman[i];
    str += i.repeat(q);
  }

  return str;
}

Popularity 10/10 Helpfulness 10/10 Language javascript

Source: stackoverflow.com

Tags: integer

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Contributed on Nov 15 2021

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

roman numeral converter + javascript

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function convertToRoman(num) {
    var roman = '';
    var decimal = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1];
    var romanNum = ['M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I'];
    for (var i = 0; i < decimal.length; i++) {
        while (decimal[i] <= num) {
            roman += romanNum[i];
            num -= decimal[i];
        }
    }
    return roman;
}

Popularity 9/10 Helpfulness 10/10 Language javascript

Source: Grepper

Tags: converter conv

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Contributed on Apr 15 2022

Depressed Dunlin

0 Answers Avg Quality 2/10

javascript convert a number into a Roman

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function romanize(num) {
  var lookup = {M:1000,CM:900,D:500,CD:400,C:100,XC:90,L:50,XL:40,X:10,IX:9,V:5,IV:4,I:1},roman = '',i;
  for ( i in lookup ) {
    while ( num >= lookup[i] ) {
      roman += i;
      num -= lookup[i];
    }
  }
  return roman;
}

Popularity 7/10 Helpfulness 5/10 Language javascript

Source: stackoverflow.com

Tags: javascript

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Contributed on Jan 03 2023

Ahmed Abdellahi abdat

0 Answers Avg Quality 2/10

convert number to roman numerals javascript

Comment

function convertToRoman(num) {
  var roman = "";
  var romanNumeral = ["M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"];
  var numbers = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1];

  for (var i = 0; i < numbers.length; i++) {
    while (num >= numbers[i]) {
      roman += romanNumeral[i];
      num -= numbers[i];
    }
  }

  return roman;
}

Explanation:

The function takes in a single parameter, "num", which is the number to be converted to Roman numerals.

The variable "roman" is initialized as an empty string. This variable will be used to store the Roman numeral representation of "num".

The variable "romanNumeral" is an array of strings, containing the Roman numerals in the order they are to be used in the conversion.

The variable "numbers" is an array of integers, containing the decimal equivalents of the Roman numerals in "romanNumeral"

The function uses a for loop to iterate through the "numbers" array.

Within the for loop, the function uses a while loop to check if the current number in "numbers" is less than or equal to the value of "num". If this is the case, the corresponding Roman numeral from "romanNumeral" is added to "roman", and the value of "num" is reduced by the current number in "numbers".

Once the for loop completes execution, the function returns the final value of "roman", which is the Roman numeral representation of the input number "num".

Popularity 7/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript roman-numerals roman-

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Contributed on Jan 29 2023

Amjad Saeed

0 Answers Avg Quality 2/10

Roman numeral to a number javascript

Comment

function convertToNumber(s) {
  var roman = {
    'I': 1,
    'V': 5,
    'X': 10,
    'L': 50,
    'C': 100,
    'D': 500,
    'M': 1000
  };
  var result = 0;
  for (var i = 0; i < s.length; i++) {
    var current = roman[s.charAt(i)];
    var next = roman[s.charAt(i + 1)];
    if (next && current < next) {
      result -= current;
    } else {
      result += current;
    }
  }
  return result;
}

console.log(convertToNumber("III")); // Output: 3

Explanation:

The function takes in a single parameter, "s", which is the Roman numeral to be converted to a number.

The variable "roman" is an object which has Roman numerals as key and their integer value as value.

The variable "result" is initialized as 0. This variable will be used to store the integer representation of "s".

The function uses a for loop to iterate through the characters of "s".

Within the for loop, the function uses the object "roman" to get the integer value of current character and next character.

If the next character has a greater value than the current character, it means the current character is used as a subtractive notation in the Roman numeral and it should be subtracted from the result. Else it should be added to the result.

Once the for loop completes execution, the function returns the final value of "result", which is the integer representation of the input Roman numeral "s".

The code snippet also has a test case where it calls the function and pass a Roman numeral "III" as an argument, and the output should be 3.

Popularity 8/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Jan 29 2023

Amjad Saeed

0 Answers Avg Quality 2/10

how to convert decimal to roman in javascript

Comment

  const decimalToRoman = () => {
    const intToRoman = (num) => {
      let result = "";
      while (num) {
        if (num >= 1000) {
          result += "M";
          num -= 1000;
        } else if (num >= 500) {
          if (num >= 900) {
            result += "CM";
            num -= 900;
          } else {
            result += "D";
            num -= 500;
          }
        } else if (num >= 100) {
          if (num >= 400) {
            result += "CD";
            num -= 400;
          } else {
            result += "C";
            num -= 100;
          }
        } else if (num >= 50) {
          if (num >= 90) {
            result += "XC";
            num -= 90;
          } else {
            result += "L";
            num -= 50;
          }
        } else if (num >= 10) {
          if (num >= 40) {
            result += "XL";
            num -= 40;
          } else {
            result += "X";
            num -= 10;
          }
        } else if (num >= 5) {
          if (num >= 9) {
            result += "IX";
            num -= 9;
          } else {
            result += "V";
            num -= 5;
          }
        } else {
          if (num >= 4) {
            result += "IV";
            num -= 4;
          } else {
            result += "I";
            num -= 1;
          }
        }
      }
      return result;
    };
    const newText = intToRoman(Math.abs(Number(string)));
    return newText;
  };

Popularity 7/10 Helpfulness 3/10 Language javascript

Source: www.textbotonline.com

Tags: decimal javascript

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Contributed on May 17 2022

sharjeelfaiq

0 Answers Avg Quality 2/10

how to convert numbers to roman numerals in javascript

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