From c9dd9469183d95c6c2f4d01e3d6365ec57386a65 Mon Sep 17 00:00:00 2001
From: Leonard Kugis <leonard@kug.is>
Date: Mon, 25 Apr 2022 18:43:46 +0200
Subject: Initial commit

---
 src/algorithmus/Caesar.java | 96 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100755 src/algorithmus/Caesar.java

(limited to 'src/algorithmus/Caesar.java')

diff --git a/src/algorithmus/Caesar.java b/src/algorithmus/Caesar.java
new file mode 100755
index 0000000..1404272
--- /dev/null
+++ b/src/algorithmus/Caesar.java
@@ -0,0 +1,96 @@
+package algorithmus;
+
+import java.awt.TextField;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.ArrayList;
+
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JSpinner;
+
+public class Caesar extends Algorithmus {
+	
+	private String name;
+	private char[] chars;
+	private int v;
+	
+	public Caesar() {
+		name = "Caesar";
+		chars = new char[] { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+				'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+				'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+				'Ä', 'Ö', 'Ü', 'ä', 'ö', 'ü', 'ß', ' '};
+		v = 13;
+	}
+	
+	public void options() {
+		JFrame frame = new JFrame();
+		frame.setLayout(null);
+		frame.setTitle("Caesar");
+		frame.setSize(200, 150);
+		TextField alphabet = new TextField();
+		String alphaText = "";
+		for(int i = 0; i<chars.length; i++) {
+			alphaText += chars[i];
+		}
+		alphabet.setText(alphaText);
+		alphabet.setBounds(5, 5, 150, 20);
+		JLabel label = new JLabel("Verschiebung:");
+		label.setBounds(5, 30, 100, 20);
+		JSpinner spinner = new JSpinner();
+		spinner.setBounds(100, 30, 50, 20);
+		spinner.setValue(v);
+		JButton apply = new JButton("Speichern");
+		apply.setBounds(5, 55, 100, 20);
+		apply.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				String alpha = alphabet.getText();
+				chars = new char[alpha.length()];
+				for(int i = 0; i<chars.length; i++) {
+					chars[i] = alpha.charAt(i);
+				}
+				v = (int) spinner.getValue();
+			}
+		});
+		frame.add(alphabet);
+		frame.add(label);
+		frame.add(spinner);
+		frame.add(apply);
+		frame.setVisible(true);
+	}
+	
+	public String getName() {
+		return name;
+	}
+	
+	public String encode(String input) {
+		String out = "";
+		for(int i = 0, size = input.length(); i<size; i++) {
+			for(int x = 0; x<chars.length; x++) {
+				if(chars[x] == input.charAt(i)) {
+					out += chars[(x + v) % chars.length];
+				}
+			}
+		}
+		return out;
+	}
+	
+	public String decode(String input) {
+		String out = "";
+		int pos = 0;
+		for(int i = 0, size = input.length(); i<size; i++) {
+			for(int x = 0; x<chars.length; x++) {
+				if(chars[x] == input.charAt(i)) {
+					pos = (x - v);
+					if(pos<=0)
+						pos += chars.length;
+					out += chars[pos % chars.length];
+				}
+			}
+		}
+		return out;
+	}
+
+}
-- 
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