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‎00Informatik/00Informatik11/Krypto/Caesar.java‎

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public class Caesar {
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public String verschlüsseln(String s, int verschiebung) {
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String result = "";
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s = s.toUpperCase();
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for (int i = 0; i < s.length(); i++) {
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char c = s.charAt(i);
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int asc = (int)c - (int)'A';
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asc = (asc + verschiebung) % 26;
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asc = asc + (int)'A';
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c = (char)asc;
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result = result + c;
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}
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return result;
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}
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public String entschlüsseln(String s, int verschiebung) {
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String result = "";
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s = s.toUpperCase();
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for (int i = 0; i < s.length(); i++) {
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char c = s.charAt(i);
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int asc = (int)c - (int)'A';
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asc = (asc + 26 - verschiebung) % 26;
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asc = asc + (int)'A';
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c = (char)asc;
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result = result + c;
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}
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return result;
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}
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}
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‎00Informatik/00Informatik11/Krypto/Main.java‎

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Caesar c = new Caesar();
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for (int i = 1; i < 26; i++) {
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println(i + ": " + c.verschlüsseln("Hallo", i));
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}
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println("-------------");
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for (int i = 1; i < 26; i++) {
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println(i + ": " + c.entschlüsseln("YMZDNDZWZIZDIN", i));
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}
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println("-------------");
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‎00Informatik/00Informatik11/Krypto/index.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title>Die C&auml;sar-Verschl&uuml;sselung</title>
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<style>
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/* From extension vscode.github */
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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.vscode-dark img[src$=\#gh-light-mode-only],
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.vscode-light img[src$=\#gh-dark-mode-only],
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.vscode-high-contrast:not(.vscode-high-contrast-light) img[src$=\#gh-light-mode-only],
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.vscode-high-contrast-light img[src$=\#gh-dark-mode-only] {
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display: none;
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}
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</style>
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/Microsoft/vscode/extensions/markdown-language-features/media/markdown.css">
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/Microsoft/vscode/extensions/markdown-language-features/media/highlight.css">
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<style>
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe WPC', 'Segoe UI', system-ui, 'Ubuntu', 'Droid Sans', sans-serif;
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font-size: 14px;
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line-height: 1.6;
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}
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</style>
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<style>
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.task-list-item {
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list-style-type: none;
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}
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.task-list-item-checkbox {
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margin-left: -20px;
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vertical-align: middle;
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pointer-events: none;
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}
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</style>
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<style>
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:root {
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--color-note: #0969da;
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--color-tip: #1a7f37;
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--color-warning: #9a6700;
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--color-severe: #bc4c00;
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--color-caution: #d1242f;
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--color-important: #8250df;
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}
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</style>
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<style>
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@media (prefers-color-scheme: dark) {
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:root {
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--color-note: #2f81f7;
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--color-tip: #3fb950;
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--color-warning: #d29922;
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--color-severe: #db6d28;
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--color-caution: #f85149;
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--color-important: #a371f7;
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}
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}
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</style>
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<style>
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.markdown-alert {
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padding: 0.5rem 1rem;
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margin-bottom: 16px;
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color: inherit;
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border-left: .25em solid #888;
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}
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.markdown-alert>:first-child {
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margin-top: 0
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}
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.markdown-alert>:last-child {
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margin-bottom: 0
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}
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.markdown-alert .markdown-alert-title {
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display: flex;
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font-weight: 500;
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align-items: center;
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line-height: 1
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}
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.markdown-alert .markdown-alert-title .octicon {
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margin-right: 0.5rem;
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display: inline-block;
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overflow: visible !important;
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vertical-align: text-bottom;
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fill: currentColor;
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}
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.markdown-alert.markdown-alert-note {
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border-left-color: var(--color-note);
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}
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.markdown-alert.markdown-alert-note .markdown-alert-title {
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color: var(--color-note);
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}
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.markdown-alert.markdown-alert-important {
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border-left-color: var(--color-important);
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}
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.markdown-alert.markdown-alert-important .markdown-alert-title {
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color: var(--color-important);
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}
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.markdown-alert.markdown-alert-warning {
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border-left-color: var(--color-warning);
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}
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.markdown-alert.markdown-alert-warning .markdown-alert-title {
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color: var(--color-warning);
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}
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.markdown-alert.markdown-alert-tip {
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border-left-color: var(--color-tip);
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}
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.markdown-alert.markdown-alert-tip .markdown-alert-title {
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color: var(--color-tip);
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}
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.markdown-alert.markdown-alert-caution {
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border-left-color: var(--color-caution);
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}
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.markdown-alert.markdown-alert-caution .markdown-alert-title {
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color: var(--color-caution);
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}
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</style>
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</head>
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<body class="vscode-body vscode-light">
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<meta charset="utf-8" />
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<title>Informatik</title>
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<link rel="stylesheet" href="https://Hi2272.github.io/StyleMD.css">
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<h1 id="die-cäsar-verschlüsselung">Die Cäsar-Verschlüsselung</h1>
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<p>Im Rahmen der einfachen Cäsar-Verschlüsselung wird das Alphabet um eine festgelegte Anzahl Stellen verschoben.<br>
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Das folgende Java-Programm verschlüsselt den Begriff &quot;Hallo&quot; mit allen möglichen Verschiebungswerten und entschlüsselt die Zeichenkette &quot;YMZDNDZWZIZDIN&quot; aus <a href="https://view.genially.com/647f2a04bc62140019e744a0/interactive-content-the-mystery-of-cryptocastle">KryptoCastle</a> mit allen Werten.</p>
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<p>Erläutere die Funktion der Methoden.</p>
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<div id="quelle" style="font-size: x-small; text-align: right;">
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2026 Rainer Hille Unter Verwendung der <a href='https://www.online-ide.de/'>Online-IDE von Martin Pabst</a><br>Hinweis: Der Code-Editor muss erst geladen werden. Klicke ggf. auf <b>Code Reset</b> um den Programmcode neu zu laden.
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</div>
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<section>
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<iframe
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srcdoc="<script>window.jo_doc = window.frameElement.textContent;</script><script src='https://Hi2272.github.io/include/js/includeide/includeIDE.js'></script>"
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width="100%" height="600" frameborder="0">
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{'id': 'Java', 'speed': 2000,
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'withBottomPanel': true ,'withPCode': false ,'withConsole': true ,
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'withFileList': true ,'withErrorList': true}
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<script id="javaCode" type="plain/text" title="Caesar.java" src="Caesar.java"></script>
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<script id="javaCode" type="plain/text" title="Main.java" src="Main.java"></script>
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</script>
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</iframe>
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</section>
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<h2 id="weiter"><a href="../02Loesung/index.html">weiter</a></h2>
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<h2 id="index"><a href="../../../index.html">Index</a></h2>
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</body>
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</html>

‎00Informatik/00Informatik11/Krypto/index.md‎

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<meta charset="utf-8" />
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<title>Informatik</title>
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<link rel="stylesheet" href="https://Hi2272.github.io/StyleMD.css">
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# Die Cäsar-Verschlüsselung
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Im Rahmen der einfachen Cäsar-Verschlüsselung wird das Alphabet um eine festgelegte Anzahl Stellen verschoben.
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Das folgende Java-Programm verschlüsselt den Begriff "Hallo" mit allen möglichen Verschiebungswerten und entschlüsselt die Zeichenkette "YMZDNDZWZIZDIN" aus [KryptoCastle](https://view.genially.com/647f2a04bc62140019e744a0/interactive-content-the-mystery-of-cryptocastle) mit allen Werten.
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Erläutere die Funktion der Methoden.
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<div id="quelle" style="font-size: x-small; text-align: right;">
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2026 Rainer Hille Unter Verwendung der <a href='https://www.online-ide.de/'>Online-IDE von Martin Pabst</a><br>Hinweis: Der Code-Editor muss erst geladen werden. Klicke ggf. auf <b>Code Reset</b> um den Programmcode neu zu laden.
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</div>
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<section>
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<iframe
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srcdoc="<script>window.jo_doc = window.frameElement.textContent;</script><script src='https://Hi2272.github.io/include/js/includeide/includeIDE.js'></script>"
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width="100%" height="600" frameborder="0">
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{'id': 'Java', 'speed': 2000,
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'withBottomPanel': true ,'withPCode': false ,'withConsole': true ,
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'withFileList': true ,'withErrorList': true}
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<script id="javaCode" type="plain/text" title="Caesar.java" src="Caesar.java"></script>
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<script id="javaCode" type="plain/text" title="Main.java" src="Main.java"></script>
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</script>
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</iframe>
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</section>
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## [weiter](../02Loesung/index.html)
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## [Index](../../../index.html)
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‎00Informatik/00Mikrocontroller/Wahlkurs/index.md‎

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### Platinen bauen
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[CNC](Fritzing/CNC/index.html)
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00[CNC](Fritzing/CNC/index.html)
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[DrillEditor](Fritzing/CNC/index.html)
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---

‎00Informatik/index.html‎

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<a href="00Informatik11/03Breitensuche/05Algorithmus/index.html">Breitensuche Algorithmus</a><br>
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<a href="00Informatik11/03Breitensuche/06Warteschlange/index.html">Die Klasse Warteschlange</a><br>
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<a href="00Informatik11/03Breitensuche/07Implementierung/index.html">Breitensuche Implementierung</a></p>
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<h2 id="verschlüsselung">Verschlüsselung</h2>
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<p><a href="https://view.genially.com/647f2a04bc62140019e744a0/interactive-content-the-mystery-of-cryptocastle">Krypto-Castle</a><br>
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<a href="00Informatik11/Krypto/index.html">Cäsar-Verschlüsselung</a></p>
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<h1 id="datenschutz">Datenschutz</h1>
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<hr>
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<p><a href="https://Hi2272.github.io/00Informatik/KlassischeMedien/index.html">Klassische Medien</a><br>

‎00Informatik/index.md‎

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[Breitensuche Implementierung](00Informatik11/03Breitensuche/07Implementierung/index.html)
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## Verschlüsselung
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[Krypto-Castle](https://view.genially.com/647f2a04bc62140019e744a0/interactive-content-the-mystery-of-cryptocastle)
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[Cäsar-Verschlüsselung](00Informatik11/Krypto/index.html)
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# Datenschutz
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***
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