diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1 @@
+{}
diff --git a/quiz/part1/Part1 Soal1.js b/quiz/part1/Part1 Soal1.js
new file mode 100644
index 0000000..6fc5e82
--- /dev/null
+++ b/quiz/part1/Part1 Soal1.js	
@@ -0,0 +1,16 @@
+function angkaPrima(angka) {
+  if (angka < 2) return false;
+
+  for (let i = 2; i <= Math.sqrt(angka); i++) {
+    if (angka % i === 0) {
+      return false;
+    }
+  }
+  return true;
+}
+
+console.log(angkaPrima(3));
+console.log(angkaPrima(7));
+console.log(angkaPrima(6));
+console.log(angkaPrima(23));
+console.log(angkaPrima(33));
diff --git a/quiz/part1/Part1 Soal2.js b/quiz/part1/Part1 Soal2.js
new file mode 100644
index 0000000..cc46f5c
--- /dev/null
+++ b/quiz/part1/Part1 Soal2.js	
@@ -0,0 +1,14 @@
+function fpb(angka1, angka2) {
+  while (angka2 !== 0) {
+    let sisa = angka1 % angka2;
+    angka1 = angka2;
+    angka2 = sisa;
+  }
+  return angka1;
+}
+
+console.log(fpb(12, 16));
+console.log(fpb(50, 40));
+console.log(fpb(22, 99));
+console.log(fpb(24, 36));
+console.log(fpb(17, 23));
diff --git a/quiz/part1/Part1 Soal3.js b/quiz/part1/Part1 Soal3.js
new file mode 100644
index 0000000..6fd0724
--- /dev/null
+++ b/quiz/part1/Part1 Soal3.js	
@@ -0,0 +1,18 @@
+function cariMedian(arr) {
+  arr.sort((a, b) => a - b);
+
+  let panjang = arr.length;
+  let tengah = Math.floor(panjang / 2);
+
+  if (panjang % 2 === 1) {
+    return arr[tengah];
+  } else {
+    return (arr[tengah - 1] + arr[tengah]) / 2;
+  }
+}
+
+console.log(cariMedian([1, 2, 3, 4, 5]));
+console.log(cariMedian([1, 3, 4, 10, 12, 13]));
+console.log(cariMedian([3, 4, 7, 6, 10]));
+console.log(cariMedian([1, 3, 3]));
+console.log(cariMedian([7, 7, 8, 8]));
diff --git a/quiz/part1/Part1 Soal4.js b/quiz/part1/Part1 Soal4.js
new file mode 100644
index 0000000..15dcdb8
--- /dev/null
+++ b/quiz/part1/Part1 Soal4.js	
@@ -0,0 +1,37 @@
+function cariModus(arr) {
+  let frekuensi = {};
+  let maxCount = 0;
+  let modus = -1;
+
+  for (let i = 0; i < arr.length; i++) {
+    let angka = arr[i];
+    if (!frekuensi[angka]) {
+      frekuensi[angka] = 1;
+    } else {
+      frekuensi[angka]++;
+    }
+  }
+
+  for (let i = 0; i < arr.length; i++) {
+    let angka = arr[i];
+    if (frekuensi[angka] > maxCount) {
+      maxCount = frekuensi[angka];
+      modus = angka;
+    }
+  }
+
+  if (maxCount === 1) {
+    return -1;
+  }
+  if (maxCount === arr.length) {
+    return -1;
+  }
+
+  return modus;
+}
+
+console.log(cariModus([10, 4, 5, 2, 4]));
+console.log(cariModus([5, 10, 10, 6, 5]));
+console.log(cariModus([10, 3, 1, 2, 5]));
+console.log(cariModus([1, 2, 3, 3, 4, 5]));
+console.log(cariModus([7, 7, 7, 7, 7]));
diff --git a/quiz/part1/Part1 Soal5.js b/quiz/part1/Part1 Soal5.js
new file mode 100644
index 0000000..b075b2f
--- /dev/null
+++ b/quiz/part1/Part1 Soal5.js	
@@ -0,0 +1,17 @@
+function ubahHuruf(kata) {
+  let hasil = "";
+  for (let i = 0; i < kata.length; i++) {
+    let kode = kata.charCodeAt(i);
+    if (kode === 122) {
+      hasil += String.fromCharCode(97);
+      hasil += String.fromCharCode(kode + 1);
+    }
+  }
+  return hasil;
+}
+
+console.log(ubahHuruf("wow"));
+console.log(ubahHuruf("developer"));
+console.log(ubahHuruf("javascript"));
+console.log(ubahHuruf("keren"));
+console.log(ubahHuruf("semangat"));
diff --git a/quiz/part2/Part2 Soal1.js b/quiz/part2/Part2 Soal1.js
new file mode 100644
index 0000000..6d113dc
--- /dev/null
+++ b/quiz/part2/Part2 Soal1.js	
@@ -0,0 +1,23 @@
+function digitPerkalianMinimum(angka) {
+  let minDigit = Infinity;
+
+  for (let i = 1; i <= angka; i++) {
+    if (angka % i === 0) {
+      let j = angka / i;
+      let gabungan = String(i) + String(j);
+      let panjang = gabungan.length;
+
+      if (panjang < minDigit) {
+        minDigit = panjang;
+      }
+    }
+  }
+
+  return minDigit;
+}
+
+console.log(digitPerkalianMinimum(24));
+console.log(digitPerkalianMinimum(90));
+console.log(digitPerkalianMinimum(20));
+console.log(digitPerkalianMinimum(179));
+console.log(digitPerkalianMinimum(1));
diff --git a/quiz/part2/Part2 Soal2.js b/quiz/part2/Part2 Soal2.js
new file mode 100644
index 0000000..49b41f9
--- /dev/null
+++ b/quiz/part2/Part2 Soal2.js	
@@ -0,0 +1,21 @@
+function urutkanAbjad(str) {
+  let arr = str.split("");
+
+  for (let i = 0; i < arr.length; i++) {
+    for (let j = 0; j < arr.length - 1; j++) {
+      if (arr[j] > arr[j + 1]) {
+        let temp = arr[j];
+        arr[j] = arr[j + 1];
+        arr[j + 1] = temp;
+      }
+    }
+  }
+
+  return arr.join("");
+}
+
+console.log(urutkanAbjad("hello"));
+console.log(urutkanAbjad("truncate"));
+console.log(urutkanAbjad("developer"));
+console.log(urutkanAbjad("software"));
+console.log(urutkanAbjad("aegis"));
diff --git a/quiz/part2/Part2 Soal3.js b/quiz/part2/Part2 Soal3.js
new file mode 100644
index 0000000..560eb17
--- /dev/null
+++ b/quiz/part2/Part2 Soal3.js	
@@ -0,0 +1,21 @@
+function tukarBesarKecil(kalimat) {
+  let hasil = "";
+
+  for (let i = 0; i < kalimat.length; i++) {
+    let char = kalimat[i];
+
+    if (char === char.toUpperCase()) {
+      hasil += char.toLowerCase();
+    } else {
+      hasil += char.toUpperCase();
+    }
+  }
+
+  return hasil;
+}
+
+console.log(tukarBesarKecil("Hello World"));
+console.log(tukarBesarKecil("I aM aLAY"));
+console.log(tukarBesarKecil("My Name is Bond!!"));
+console.log(tukarBesarKecil("IT sHOULD bE me"));
+console.log(tukarBesarKecil("001-A-3-5TrdYW"));
diff --git a/quiz/part2/Part2 Soal4.js b/quiz/part2/Part2 Soal4.js
new file mode 100644
index 0000000..137522f
--- /dev/null
+++ b/quiz/part2/Part2 Soal4.js	
@@ -0,0 +1,17 @@
+function checkAB(str) {
+  for (let i = 0; i < str.length; i++) {
+    if (str[i] === "a" && str[i + 4] === "b") {
+      return true;
+    }
+    if (str[i] === "b" && str[i + 4] === "a") {
+      return true;
+    }
+  }
+  return false;
+}
+
+console.log(checkAB("lane borrowed"));
+console.log(checkAB("i am sick"));
+console.log(checkAB("you are boring"));
+console.log(checkAB("barbarian"));
+console.log(checkAB("bacon and meat"));
diff --git a/quiz/part3/Part3 Soal1.js b/quiz/part3/Part3 Soal1.js
new file mode 100644
index 0000000..e9947f7
--- /dev/null
+++ b/quiz/part3/Part3 Soal1.js	
@@ -0,0 +1,27 @@
+function changeMe(arr) {
+  if (arr.length === 0) {
+    console.log('""');
+    return;
+  }
+
+  const currentYear = 2023;
+
+  for (let i = 0; i < arr.length; i++) {
+    let person = {
+      firstName: arr[i][0],
+      lastName: arr[i][1],
+      gender: arr[i][2],
+      age: arr[i][3] ? currentYear - arr[i][3] : "Invalid Birth Year",
+    };
+
+    console.log(`${i + 1}. ${person.firstName} ${person.lastName}:`);
+    console.log(person);
+  }
+}
+
+changeMe([
+  ["Christ", "Evans", "Male", 1982],
+  ["Robert", "Downey", "Male"],
+]);
+
+changeMe([]);
diff --git a/quiz/part3/Part3 Soal2.js b/quiz/part3/Part3 Soal2.js
new file mode 100644
index 0000000..d7eb052
--- /dev/null
+++ b/quiz/part3/Part3 Soal2.js	
@@ -0,0 +1,45 @@
+function shoppingTime(memberId, money) {
+  if (!memberId) {
+    return "Mohon maaf, toko X hanya berlaku untuk member saja";
+  }
+  if (money < 50000) {
+    return "Mohon maaf, uang tidak cukup";
+  }
+
+  let saleItems = [
+    ["Sepatu Stacattu", 1500000],
+    ["Baju Zoro", 500000],
+    ["Baju H&N", 250000],
+    ["Sweater Uniklooh", 175000],
+    ["Casing Handphone", 50000],
+  ];
+
+  let listPurchased = [];
+  let sisaUang = money;
+
+  for (let i = 0; i < saleItems.length; i++) {
+    let item = saleItems[i][0];
+    let harga = saleItems[i][1];
+    if (sisaUang >= harga) {
+      listPurchased.push(item);
+      sisaUang -= harga;
+    }
+  }
+
+  return {
+    memberId: memberId,
+    money: money,
+    listPurchased: listPurchased,
+    changeMoney: sisaUang,
+  };
+}
+
+console.log(shoppingTime("1820RzKrnWn08", 2475000));
+
+console.log(shoppingTime("82Ku8Ma742", 170000));
+
+console.log(shoppingTime("", 2475000));
+
+console.log(shoppingTime("234JdhweRxa53", 15000));
+
+console.log(shoppingTime());
diff --git a/quiz/part3/Part3 Soal3.js b/quiz/part3/Part3 Soal3.js
new file mode 100644
index 0000000..b0bd006
--- /dev/null
+++ b/quiz/part3/Part3 Soal3.js	
@@ -0,0 +1,64 @@
+function countProfit(shoppers) {
+  var listBarang = [
+    ["Sepatu Stacattu", 1500000, 10],
+    ["Baju Zoro", 500000, 2],
+    ["Sweater Uniklooh", 175000, 1],
+  ];
+
+  if (shoppers.length === 0) {
+    return [];
+  }
+
+  let result = [];
+
+  for (let i = 0; i < listBarang.length; i++) {
+    let productName = listBarang[i][0];
+    let price = listBarang[i][1];
+    let stock = listBarang[i][2];
+
+    let obj = {
+      product: productName,
+      shoppers: [],
+      leftOver: stock,
+      totalProfit: 0,
+    };
+
+    for (let j = 0; j < shoppers.length; j++) {
+      let buyer = shoppers[j];
+
+      if (buyer.product === productName && buyer.amount <= obj.leftOver) {
+        obj.shoppers.push(buyer.name);
+        obj.leftOver -= buyer.amount;
+        obj.totalProfit += buyer.amount * price;
+      }
+    }
+
+    result.push(obj);
+  }
+
+  return result;
+}
+
+console.log(
+  countProfit([
+    { name: "Windi", product: "Sepatu Stacattu", amount: 2 },
+    { name: "Vanessa", product: "Sepatu Stacattu", amount: 3 },
+    { name: "Rani", product: "Sweater Uniklooh", amount: 2 },
+  ])
+);
+
+console.log(
+  countProfit([
+    { name: "Windi", product: "Sepatu Stacattu", amount: 8 },
+    { name: "Vanessa", product: "Sepatu Stacattu", amount: 10 },
+    { name: "Rani", product: "Sweater Uniklooh", amount: 1 },
+    { name: "Devi", product: "Baju Zoro", amount: 1 },
+    { name: "Lisa", product: "Baju Zoro", amount: 1 },
+  ])
+);
+
+console.log(
+  countProfit([{ name: "Windi", product: "Sepatu Naiki", amount: 5 }])
+);
+
+console.log(countProfit([]));
diff --git a/quiz/ujian/Ujian Soal 3.js b/quiz/ujian/Ujian Soal 3.js
new file mode 100644
index 0000000..50eba2d
--- /dev/null
+++ b/quiz/ujian/Ujian Soal 3.js	
@@ -0,0 +1,45 @@
+function highestScore(students) {
+  let result = {};
+
+  for (let i = 0; i < students.length; i++) {
+    let student = students[i];
+    let kelas = student.class;
+
+    if (!result[kelas]) {
+      result[kelas] = {
+        name: student.name,
+        score: student.score,
+      };
+    } else {
+      if (student.score > result[kelas].score) {
+        result[kelas] = {
+          name: student.name,
+          score: student.score,
+        };
+      }
+    }
+  }
+
+  return result;
+}
+
+console.log(
+  highestScore([
+    { name: "Dimitri", score: 90, class: "foxes" },
+    { name: "Alexei", score: 85, class: "wolves" },
+    { name: "Sergei", score: 74, class: "foxes" },
+    { name: "Anastasia", score: 78, class: "wolves" },
+  ])
+);
+
+console.log(
+  highestScore([
+    { name: "Alexander", score: 100, class: "foxes" },
+    { name: "Alisa", score: 76, class: "wolves" },
+    { name: "Vladimir", score: 92, class: "foxes" },
+    { name: "Albert", score: 71, class: "wolves" },
+    { name: "Viktor", score: 80, class: "tigers" },
+  ])
+);
+
+console.log(highestScore([]));
diff --git a/quiz/ujian/Ujian Soal2.js b/quiz/ujian/Ujian Soal2.js
new file mode 100644
index 0000000..2eb3070
--- /dev/null
+++ b/quiz/ujian/Ujian Soal2.js	
@@ -0,0 +1,35 @@
+function naikAngkot(arrPenumpang) {
+  let rute = ["A", "B", "C", "D", "E", "F"];
+  let hasil = [];
+
+  for (let i = 0; i < arrPenumpang.length; i++) {
+    let penumpang = arrPenumpang[i][0];
+    let naikDari = arrPenumpang[i][1];
+    let tujuan = arrPenumpang[i][2];
+
+    let startIndex = rute.indexOf(naikDari);
+    let endIndex = rute.indexOf(tujuan);
+
+    let bayar = (endIndex - startIndex) * 2000;
+
+    let obj = {
+      penumpang: penumpang,
+      naikDari: naikDari,
+      tujuan: tujuan,
+      bayar: bayar,
+    };
+
+    hasil.push(obj);
+  }
+
+  return hasil;
+}
+
+console.log(
+  naikAngkot([
+    ["Dimitri", "B", "F"],
+    ["Icha", "A", "B"],
+  ])
+);
+
+console.log(naikAngkot([]));
diff --git a/quiz/ujian/Ujian Soal4.js b/quiz/ujian/Ujian Soal4.js
new file mode 100644
index 0000000..d863a92
--- /dev/null
+++ b/quiz/ujian/Ujian Soal4.js	
@@ -0,0 +1,40 @@
+function graduates(students) {
+  let result = {};
+
+  for (let i = 0; i < students.length; i++) {
+    let student = students[i];
+    let kelas = student.class;
+
+    result[kelas] = [];
+  }
+
+  if (student.score > 75) {
+    result[kelas].push({
+      name: student.name,
+      score: student.score,
+    });
+  }
+}
+
+return result;
+
+console.log(
+  graduates([
+    { name: "Dimitri", score: 90, class: "foxes" },
+    { name: "Alexei", score: 85, class: "wolves" },
+    { name: "Sergei", score: 74, class: "foxes" },
+    { name: "Anastasia", score: 78, class: "wolves" },
+  ])
+);
+
+console.log(
+  graduates([
+    { name: "Alexander", score: 100, class: "foxes" },
+    { name: "Alisa", score: 76, class: "wolves" },
+    { name: "Vladimir", score: 92, class: "foxes" },
+    { name: "Albert", score: 71, class: "wolves" },
+    { name: "Viktor", score: 80, class: "tigers" },
+  ])
+);
+
+console.log(graduates([]));
diff --git a/quiz/ujian/Ujian1 Soal1.js b/quiz/ujian/Ujian1 Soal1.js
new file mode 100644
index 0000000..6b13a59
--- /dev/null
+++ b/quiz/ujian/Ujian1 Soal1.js	
@@ -0,0 +1,48 @@
+function deepSum(arr) {
+  if (arr.length === 0) {
+    return "No number";
+  }
+
+  let total = 0;
+
+  for (let i = 0; i < arr.length; i++) {
+    for (let j = 0; j < arr[i].length; j++) {
+      for (let k = 0; k < arr[i][j].length; k++) {
+        total += arr[i][j][k];
+      }
+    }
+  }
+
+  return total;
+}
+
+console.log(
+  deepSum([
+    [
+      [4, 5, 6],
+      [9, 1, 2, 10],
+      [9, 4, 3],
+    ],
+    [
+      [4, 14, 31],
+      [9, 10, 18, 12, 20],
+      [1, 4, 90],
+    ],
+    [
+      [2, 5, 10],
+      [3, 4, 5],
+      [2, 4, 5, 10],
+    ],
+  ])
+);
+
+console.log(
+  deepSum([
+    [[20, 10], [15], [1, 1]],
+    [[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [2], [9, 11]],
+    [[3, 5, 1], [1, 5, 3], [1]],
+    [[2]],
+  ])
+);
+
+console.log(deepSum([]));