From b09cc6a74798e46e40520716c91cb35b97177205 Mon Sep 17 00:00:00 2001
From: Katywolk <Katywolk@gmail.com>
Date: Thu, 30 Jan 2025 12:53:17 +0800
Subject: [PATCH 1/2] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=B8=D0=BB?=
 =?UTF-8?q?=D0=B0=203=20=D1=80=D0=B5=D1=88=D0=B5=D0=BD=D0=B8=D1=8F=20?=
 =?UTF-8?q?=D0=B7=D0=B0=D0=B4=D0=B0=D1=87=20DataTypes?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Exercises/1-hoisting.js     |  5 ++++-
 Exercises/2-by-value.js     |  6 +++++-
 Exercises/3-by-reference.js | 12 ++++++++++--
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/Exercises/1-hoisting.js b/Exercises/1-hoisting.js
index 0920026..ab6ab6b 100644
--- a/Exercises/1-hoisting.js
+++ b/Exercises/1-hoisting.js
@@ -1,5 +1,8 @@
 'use strict';
 
-const fn = null;
+const fn = function raising() {
+  const variable = 'Hello';
+  console.log(variable);
+};
 
 module.exports = { fn };
diff --git a/Exercises/2-by-value.js b/Exercises/2-by-value.js
index f576b24..80e623e 100644
--- a/Exercises/2-by-value.js
+++ b/Exercises/2-by-value.js
@@ -1,5 +1,9 @@
 'use strict';
 
-const inc = null;
+const inc = (x) => ++x;
+
+// function inc(n) {
+//   return n+1;
+// }
 
 module.exports = { inc };
diff --git a/Exercises/3-by-reference.js b/Exercises/3-by-reference.js
index 74638ec..c7e21a3 100644
--- a/Exercises/3-by-reference.js
+++ b/Exercises/3-by-reference.js
@@ -1,7 +1,15 @@
 'use strict';
 
-const inc = (obj) => {
-  console.log(obj);
+const inc = function(obj) {
+  obj.n += 1;
 };
 
+// function inc(num) {
+//   if (num && typeof num.n === 'number') {
+//     num.n += 1;
+//   } else {
+//     throw new Error("Invalid input: Object must have a numeric 'n' field");
+//   }
+// }
+
 module.exports = { inc };

From afbdd3b6057288b260a765fa465f6cb1fc964022 Mon Sep 17 00:00:00 2001
From: Katywolk <Katywolk@gmail.com>
Date: Thu, 30 Jan 2025 13:49:52 +0800
Subject: [PATCH 2/2] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=B8=D0=BB?=
 =?UTF-8?q?=D0=B0=20=D1=80=D0=B5=D1=88=D0=B5=D0=BD=D0=B8=D0=B5=204=20?=
 =?UTF-8?q?=D0=B7=D0=B0=D0=B4=D0=B0=D1=87=D0=B8?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 Exercises/4-count-types.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Exercises/4-count-types.js b/Exercises/4-count-types.js
index 4c9545a..ff1faae 100644
--- a/Exercises/4-count-types.js
+++ b/Exercises/4-count-types.js
@@ -1,5 +1,12 @@
 'use strict';
 
-const countTypesInArray = null;
+function countTypesInArray(arr) {
+  const result = {};
+  for (const item of arr) {
+    const type = typeof item;
+    result[type] = (result[type] || 0) + 1;
+  }
+  return result;
+}
 
 module.exports = { countTypesInArray };