From 4f19129a69fb9fa433ee64686b90c5f083c78c78 Mon Sep 17 00:00:00 2001
From: Bharat Arya <aryabharat33@gmail.com>
Date: Thu, 1 Oct 2020 13:18:18 +0530
Subject: [PATCH] Create AtBash.js

---
 Ciphers/AtBash.js | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Ciphers/AtBash.js

diff --git a/Ciphers/AtBash.js b/Ciphers/AtBash.js
new file mode 100644
index 000000000..b5bbdbed9
--- /dev/null
+++ b/Ciphers/AtBash.js
@@ -0,0 +1,29 @@
+function enAtbash(mensage) {    
+
+    var alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    var tebahpla = "ZYXWVUTSRQPONMLKJIHGFEDCBA";
+    var alphabet1 = "abcdefghijklmnopqrstuvwxyz";
+    var tebahpla1 = "zyxwvutsrqponmlkjihgfedcba";
+    var decoded_string = "";
+
+    for (var i = 0; i < mensage.length; i++) {
+        var coded_letra = mensage.charAt(i);
+        
+	if (/[^a-zA-Z]/.test(mensage[i])) {
+		decoded_string = decoded_string+mensage[i];	
+	}
+	else if (mensage[i] === mensage[i].toUpperCase()) {
+	    	var letraPosMayus = alphabet.indexOf(coded_letra);
+	    	var tebLetraPosMayus = tebahpla.charAt(letraPosMayus);
+	    	decoded_string = decoded_string+tebLetraPosMayus;
+        } else {
+	    	var letraPosMinus1 = alphabet1.indexOf(coded_letra);
+	    	var tebLetraPosMinus1 = tebahpla1.charAt(letraPosMinus1);
+	    	decoded_string = decoded_string + tebLetraPosMinus1;
+        }
+
+    }
+    return decoded_string;
+}
+
+document.write(enAtbash("Hello World!"));