Roman Numeral Converter
Convert the given number into a roman numeral.
All roman numerals answers should be provided in upper-case.
SOLUTION:
let romanNumbers = {
1: "I",
4: "IV",
5: "V",
9: "IX",
10: "X",
40: "XL",
50: "L",
90: "XC",
100: "C",
400: "CD",
500: "D",
900: "CM",
1000: "M"
}
let diffRoman = {
10: 1,
100: 10,
1000: 100
}
function convertToRoman(num) {
let ch = factorNum(num).map(item => {
let i = romanNumbers[item]
return i
})
return ch.join("");
}
function factorNum(num, arr = []) {
let numFactors = [...arr]
let a = Object.keys(romanNumbers).sort((a,b) => b-a).filter(item => num>=item)[0]
numFactors.push(a)
let b = num-a;
let c = Object.keys(diffRoman).sort((a,b) => a-b).filter(item => b < item)[0]
let d = diffRoman[c];
let e = Object.keys(romanNumbers).sort((a,b) => b-a)
if(e.includes(b+d)) {
numFactors.push(b.toString())
} else if(b > 1) {
return factorNum(b, numFactors)
} else {
numFactors.push(b.toString())
}
return numFactors;
}
// convertToRoman(36);
console.log(convertToRoman(68)) |
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