From ed38deaff31d7805f81707c1fbd9fbc688481189 Mon Sep 17 00:00:00 2001
From: Aishwarya0601 <69068161+Aishwarya0601@users.noreply.github.com>
Date: Thu, 21 Oct 2021 11:32:24 +0530
Subject: [PATCH 1/4] Adding code for Caesar encryption and decryption

---
 src/main/kotlin/Caesar.kt | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 src/main/kotlin/Caesar.kt

diff --git a/src/main/kotlin/Caesar.kt b/src/main/kotlin/Caesar.kt
new file mode 100644
index 0000000..16912ee
--- /dev/null
+++ b/src/main/kotlin/Caesar.kt
@@ -0,0 +1,34 @@
+package encryption
+object Caesar {
+    fun encrypt(s: String, key: Int): String {
+        val offset = key % 26
+        if (offset == 0) return s
+        var d: Char
+        val chars = CharArray(s.length)
+        for ((index, c) in s.withIndex()) {
+            if (c in 'A'..'Z') {
+                d = c + offset
+                if (d > 'Z') d -= 26
+            }
+            else if (c in 'a'..'z') {
+                d = c + offset
+                if (d > 'z') d -= 26
+            }
+            else
+                d = c
+            chars[index] = d
+        }
+        return chars.joinToString("")
+    }
+
+    fun decrypt(s: String, key: Int): String {
+        return encrypt(s, 26 - key)
+    }
+}
+
+fun main(args: Array<String>) {
+    val encoded = Caesar.encrypt("InteliJ IDEA Community Edition", 10)
+    println(encoded)
+    val decoded = Caesar.decrypt(encoded, 10)
+    println(decoded)
+}
\ No newline at end of file

From 41ca88779fee5a8e28e7c09353a74011422615c6 Mon Sep 17 00:00:00 2001
From: Aishwarya0601 <69068161+Aishwarya0601@users.noreply.github.com>
Date: Thu, 21 Oct 2021 11:33:10 +0530
Subject: [PATCH 2/4] Creating folder for encryption

---
 src/main/kotlin/{ => Encryption}/Caesar.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 rename src/main/kotlin/{ => Encryption}/Caesar.kt (96%)

diff --git a/src/main/kotlin/Caesar.kt b/src/main/kotlin/Encryption/Caesar.kt
similarity index 96%
rename from src/main/kotlin/Caesar.kt
rename to src/main/kotlin/Encryption/Caesar.kt
index 16912ee..4c9cc4d 100644
--- a/src/main/kotlin/Caesar.kt
+++ b/src/main/kotlin/Encryption/Caesar.kt
@@ -31,4 +31,4 @@ fun main(args: Array<String>) {
     println(encoded)
     val decoded = Caesar.decrypt(encoded, 10)
     println(decoded)
-}
\ No newline at end of file
+}

From 03f85880f4240fcddd771e0d620330bcd09892fc Mon Sep 17 00:00:00 2001
From: Aishwarya0601 <69068161+Aishwarya0601@users.noreply.github.com>
Date: Thu, 21 Oct 2021 11:34:11 +0530
Subject: [PATCH 3/4] Adding test cases for Caesar encryption

---
 src/test/kotlin/CaesarEncTest.kt | 35 ++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 src/test/kotlin/CaesarEncTest.kt

diff --git a/src/test/kotlin/CaesarEncTest.kt b/src/test/kotlin/CaesarEncTest.kt
new file mode 100644
index 0000000..7e8dd6f
--- /dev/null
+++ b/src/test/kotlin/CaesarEncTest.kt
@@ -0,0 +1,35 @@
+import encryption.Caesar
+import org.junit.Test
+
+class CaesarEncryptionTest{
+
+    @Test
+    fun testWithKotlinStringAndKey8() {
+        val string = "Kotlin is a powerful programming language"
+        val encoded = Caesar.encrypt(string, 8)
+        assert(Caesar.decrypt(encoded,8)== string)
+
+    }
+    @Test
+    fun testWithIntellIjStringAndKey10() {
+        val string = "InteliJ IDEA Community Edition"
+        val encoded = Caesar.encrypt(string, 10)
+        assert(Caesar.decrypt(encoded,10)== string)
+
+    }
+
+    @Test
+    fun testWithAlgorithmjStringAndKey3() {
+        val string = "Algorithm-Repo"
+        val encoded = Caesar.encrypt(string, 3)
+        assert(Caesar.decrypt(encoded,3)== string)
+
+    }
+
+
+
+
+
+
+
+}
\ No newline at end of file

From 8bba3b90b052dd1aa31dbf926008dc83d84de04f Mon Sep 17 00:00:00 2001
From: Aishwarya0601 <69068161+Aishwarya0601@users.noreply.github.com>
Date: Thu, 21 Oct 2021 11:34:50 +0530
Subject: [PATCH 4/4] Adding test folder for Encryption

---
 src/test/kotlin/{ => Encryption}/CaesarEncTest.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 rename src/test/kotlin/{ => Encryption}/CaesarEncTest.kt (95%)

diff --git a/src/test/kotlin/CaesarEncTest.kt b/src/test/kotlin/Encryption/CaesarEncTest.kt
similarity index 95%
rename from src/test/kotlin/CaesarEncTest.kt
rename to src/test/kotlin/Encryption/CaesarEncTest.kt
index 7e8dd6f..330446a 100644
--- a/src/test/kotlin/CaesarEncTest.kt
+++ b/src/test/kotlin/Encryption/CaesarEncTest.kt
@@ -32,4 +32,4 @@ class CaesarEncryptionTest{
 
 
 
-}
\ No newline at end of file
+}