Created: TheFiscalCode Solution

Author: arindal1

L-A/0011 The Fiscal Code/TheFiscalCode.js

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+function fiscalCode(data) {
+  const monthsConversion = {
+    '01': 'A', '02': 'B', '03': 'C', '04': 'D', '05': 'E', '06': 'H',
+    '07': 'L', '08': 'M', '09': 'P', '10': 'R', '11': 'S', '12': 'T'
+  };
+
+  // Helper function to generate code for names and surnames
+  function generateCode(name, isSurname) {
+    const vowels = 'AEIOU';
+    let consonants = '';
+    let code = '';
+
+    // Helper function to check if a character is a consonant
+    function isConsonant(char) {
+      return /[BCDFGHJKLMNPQRSTVWXYZ]/.test(char);
+    }
+
+    for (let i = 0; i < name.length && consonants.length < 3; i++) {
+      const char = name[i].toUpperCase();
+      if (isConsonant(char)) {
+        consonants += char;
+      }
+    }
+
+    if (consonants.length < 3) {
+      for (let i = 0; i < name.length && consonants.length < 3; i++) {
+        const char = name[i].toUpperCase();
+        if (vowels.includes(char)) {
+          consonants += char;
+        }
+      }
+    }
+
+    if (consonants.length < 3) {
+      consonants += 'X'.repeat(3 - consonants.length);
+    }
+
+    code = consonants;
+
+    if (isSurname) {
+      code += 'XXX';
+    } else {
+      code += name.length >= 3 ? name[0] + name[2] + name[3] : name + 'XX';
+    }
+
+    return code;
+  }
+
+  const surnameCode = generateCode(data.surname, true);
+  const nameCode = generateCode(data.name, false);
+
+  const year = data.dob.split('/')[2].slice(-2);
+  const month = monthsConversion[data.dob.split('/')[1]];
+  const day = (data.gender === 'F' ? 40 + parseInt(data.dob.split('/')[0]) : parseInt(data.dob.split('/')[0])).toString().padStart(2, '0');
+
+  return `${surnameCode}${nameCode}${year}${month}${day}`;
+}
+
+// Examples
+console.log(fiscalCode({
+  name: "Matt",
+  surname: "Edabit",
+  gender: "M",
+  dob: "1/1/1900"
+})); // ➞ "DBTMTT00A01"
+
+console.log(fiscalCode({
+  name: "Helen",
+  surname: "Yu",
+  gender: "F",
+  dob: "1/12/1950"
+})); // ➞ "YUXHLN50T41"
+
+console.log(fiscalCode({
+  name: "Mickey",
+  surname: "Mouse",
+  gender: "M",
+  dob: "16/1/1928"
+})); // ➞ "MSOMKY28A16"