Caesar Cipher.java

anvikshik · web-flow · commit a577ce0a3cb6 · 2020-10-13T20:55:20.000+05:30
diff --git a/Caesar Cipher.java b/Caesar Cipher.java
@@ -0,0 +1,35 @@
+class CaesarCipher 
+{ 
+    public static StringBuffer encrypt(String text, int s) 
+    { 
+        StringBuffer result= new StringBuffer(); 
+  
+        for (int i=0; i<text.length(); i++) 
+        { 
+            if (Character.isUpperCase(text.charAt(i))) 
+            { 
+                char ch = (char)(((int)text.charAt(i) + 
+                                  s - 65) % 26 + 65); 
+                result.append(ch); 
+            } 
+            else
+            { 
+                char ch = (char)(((int)text.charAt(i) + 
+                                  s - 97) % 26 + 97); 
+                result.append(ch); 
+            } 
+        } 
+        return result; 
+    } 
+  
+  
+  
+    public static void main(String[] args) 
+    { 
+        String text = "ATTACKATONCE"; 
+        int s = 4; 
+        System.out.println("Text  : " + text); 
+        System.out.println("Shift : " + s); 
+        System.out.println("Cipher: " + encrypt(text, s)); 
+    } 
+} 
