From 5f73bdccb79b9fda1f7742f38b79acce010eef50 Mon Sep 17 00:00:00 2001
From: Jefflionel <168990522+Jefflionel@users.noreply.github.com>
Date: Thu, 5 Mar 2026 22:23:25 +0100
Subject: [PATCH 1/3] exercise on higher order functions

---
 Higher_Order_Ex.kt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Higher_Order_Ex.kt

diff --git a/Higher_Order_Ex.kt b/Higher_Order_Ex.kt
new file mode 100644
index 0000000..9ac8a6a
--- /dev/null
+++ b/Higher_Order_Ex.kt
@@ -0,0 +1,16 @@
+import kotlin.*
+
+fun processList(numbers: List<Int>, predicate: (Int) -> Boolean): List<Int> =
+        numbers.filter(predicate) 
+
+fun main() {
+    val numbers = listOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
+
+    // Example 1: keep only even numbers
+    val evenNumbers = processList(numbers) { it % 2 == 0 }
+    println("Even: $evenNumbers") 
+
+    // Example 2: keep only numbers > 5
+    val bigNumbers = processList(numbers) { it > 5 }
+    println("Big: $bigNumbers") 
+}

From 84c389a2a3b1342a979d6b5cb864a959d305de60 Mon Sep 17 00:00:00 2001
From: Jefflionel <168990522+Jefflionel@users.noreply.github.com>
Date: Thu, 5 Mar 2026 22:29:13 +0100
Subject: [PATCH 2/3] exercise on collections

---
 Collection_Ex.kt | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 Collection_Ex.kt

diff --git a/Collection_Ex.kt b/Collection_Ex.kt
new file mode 100644
index 0000000..24b51df
--- /dev/null
+++ b/Collection_Ex.kt
@@ -0,0 +1,11 @@
+fun main() {
+    val words = listOf("Kotlin", "is", "awesome", "for", "Android", "development")
+
+    // Step 1
+    val wordLengths = words.associateWith { it.length }
+
+    // Step 2
+    wordLengths.filter { it.value > 4 }.forEach { (word, length) ->
+        println("$word has $length letters")
+    }
+}

From b09a5de9bbb4c4434797636810cb0368abc070df Mon Sep 17 00:00:00 2001
From: Jefflionel <168990522+Jefflionel@users.noreply.github.com>
Date: Thu, 5 Mar 2026 22:32:41 +0100
Subject: [PATCH 3/3] DataProcessing exercise

---
 Data_Processing_Ex.kt | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Data_Processing_Ex.kt

diff --git a/Data_Processing_Ex.kt b/Data_Processing_Ex.kt
new file mode 100644
index 0000000..d2edc7d
--- /dev/null
+++ b/Data_Processing_Ex.kt
@@ -0,0 +1,29 @@
+data class Student(val name: String, val age: Int, val score: Int)
+
+fun List<Student>.averageScore(): Double =
+        if (isEmpty()) 0.0 else sumOf { it.score }.toDouble() / size
+
+fun processStudents(students: List<Student>, action: (Student) -> Unit) {
+    students.forEach(action)
+}
+
+fun main() {
+    val students =
+            listOf(
+                    Student("Alice", 20, 85),
+                    Student("Bob", 21, 92),
+                    Student("Jeff", 19, 78),
+                    Student("Sara", 22, 95),
+                    Student("Mike", 20, 65)
+            )
+
+    // students with score >= 80
+    students.filter { it.score >= 80 }.map { it.name }.forEach { println("Good student: $it") }
+
+    println("\nProcessing all students:")
+    processStudents(students) { student ->
+        println("${student.name} (${student.age}) scored ${student.score}")
+    }
+
+    println("\nAverage score of all students: ${students.averageScore()}")
+}