remove exercise from bitcoinopcode temporary

Author: jrakibi

decoding/bitcoin-opcodes.mdx

@@ -49,226 +49,3 @@ The visualization below includes an explanation of the most commonly used opcode
     [OP_CTV](https://bitcoinops.org/en/topics/op_checktemplateverify),
     [OP_CAT](https://bitcoinops.org/en/topics/op_cat), ...
 </ExpandableAlert>
-
-## Exercise: Implement OP_ADD
-
-Your task is to implement the `OP_ADD` function in the interactive code editor below. Use the provided template and follow the steps outlined in the comments.
-
-Test your implementation by:
-
-1. Pushing numbers onto the stack using the input field and "Push" button.
-2. Clicking the "OP_ADD" button to execute your implementation.
-3. Observing the result on the stack and the feedback message.
-
-<ExerciseSelector
-  sandpackConfig={{
-    options: {
-      showLineNumbers: true,
-      showInlineErrors: true,
-      editorHeight: 500
-    },
-    customSetup: {
-      dependencies: {
-        "react": "^18.0.0",
-        "react-dom": "^18.0.0",
-        "lucide-react": "^0.263.1"
-      },
-    },
-    files: {
-      "/OP_ADD.js": {
-        code: `const OP_ADD = (stack) => {
-  // Note: The stack is an array. You can use pop(), push(), and length.
-
-// 1. Check if there are at least 2 elements in the stack
-// 2. If not, return false
-// 3. Pop the top two elements from the stack
-// 4. Add them together
-// 5. Push the result back onto the stack
-// 6. Return true if successful, false if an error occurred
-
-try {
-// Implement OP_ADD here
-
-    return true; // Operation successful
-
-} catch (error) {
-console.error("Error in OP_ADD:", error);
-return false; // Operation failed
-}
-};
-
-export default OP_ADD
-;`,
-        active: true
-      },
-      "/App.js": {
-        code: `
-import React, { useState } from "react"
-import { Plus, Trash2 } from "lucide-react"
-import OP_ADD from "./OP_ADD"
-
-const App = () => {
-const [stack, setStack] = useState([])
-const [input, setInput] = useState('')
-const [message, setMessage] = useState('')
-
-const pushToStack = () => {
-if (input.trim() !== '') {
-setStack([...stack, parseInt(input)])
-setInput('')
-setMessage('')
-}
-}
-
-const clearStack = () => {
-setStack([])
-setMessage('')
-}
-
-const executeOpAdd = () => {
-const newStack = [...stack]
-const expectedResult =
-newStack.length >= 2
-? newStack[newStack.length - 1] + newStack[newStack.length - 2]
-: null
-const result = OP_ADD(newStack)
-
-    if (
-      result &&
-      newStack.length === stack.length - 1 &&
-      newStack[newStack.length - 1] === expectedResult
-    ) {
-      setStack(newStack)
-      setMessage('OP_ADD executed successfully!')
-    } else {
-      setMessage('Error: OP_ADD execution failed or produced incorrect result')
-    }
-
-}
-
-return (
-
-<div className='bg-[#272E35] p-4 m-6 rounded-lg text-sm'>
-<h1 className='text-2xl font-bold mb-4 text-[#E5E6F1]'>
-Bitcoin Stack Simulator: OP_ADD
-</h1>
-
-      <div className='mb-4 flex'>
-        <input
-          type='number'
-          value={input}
-          onChange={(e) => setInput(e.target.value)}
-          className='bg-[#3c3c3c] text-[#E5E6F1] border border-[#5A6270] p-2 mr-2 rounded'
-          placeholder='Enter a number'
-        />
-        <button
-          onClick={pushToStack}
-          className='bg-[#3c3c3c] text-[#E5E6F1] p-2 rounded hover:bg-[#5A6270]'
-        >
-          Push
-        </button>
-      </div>
-
-      <div className='mb-4'>
-        <button
-          onClick={executeOpAdd}
-          className='bg-orange-500 text-white p-2 rounded mr-2 hover:bg-orange-600'
-          disabled={stack.length < 2}
-        >
-          <Plus className='inline mr-1' size={18} /> OP_ADD
-        </button>
-        <button
-          onClick={clearStack}
-          className='bg-[#3c3c3c] text-[#E5E6F1] p-2 rounded hover:bg-[#5A6270]'
-        >
-          <Trash2 className='inline mr-1' size={18} /> Clear Stack
-        </button>
-      </div>
-
-      <div className='border border-[#3c3c3c] p-4 mb-4 rounded-lg bg-[#1D2127]'>
-        <h2 className='text-xl font-semibold mb-2 text-[#E5E6F1]'>Stack:</h2>
-        {stack.length === 0 ? (
-          <p className='text-[#E5E6F1]'>Stack is empty</p>
-        ) : (
-          <ul className='list-disc pl-5 text-[#E5E6F1]'>
-            {stack.map((item, index) => (
-              <li key={index}>{item}</li>
-            ))}
-          </ul>
-        )}
-      </div>
-
-      {message && <p className='text-sm text-orange-500'>{message}</p>}
-    </div>
-
-)
-}
-
-export default App`
-      },
-      "/index.js": {
-        code: `
-import React from "react"
-import { createRoot } from "react-dom/client"
-import App from "./App"
-
-const root = createRoot(document.getElementById("root"));
-root.render(<App />);
-`
-}
-}
-}}
-trinketUrl="https://trinket.io/embed/python3/4cead7364e34"
-/>
-
-<ExpandableAlert
-  title="Solution code"
-  type="solution"
-  expandable={true}
-  initialLines={0}
->
-  <details>
-    <summary>Python Solution</summary>
-    ```python
-    def op_add(stack):
-        if len(stack) < 2:
-            return False
-        try:
-            b = stack.pop()
-            a = stack.pop()
-            result = a + b
-            stack.append(result)
-            return True
-        except Exception as error:
-            print(f"Error in OP_ADD: {error}")
-            return False
-    ```
-  </details>
-
-  <details>
-    <summary>JavaScript Solution</summary>
-    ```javascript
-    const OP_ADD = (stack) => {
-        // 1. Check if there are at least 2 elements in the stack
-        if (stack.length < 2) {
-            return false; // Not enough elements in the stack
-        }
-        try {
-            // 2. Pop the top two elements from the stack
-            const b = stack.pop();
-            const a = stack.pop();
-            // 3. Add them together
-            const result = a + b;
-            // 4. Push the result back onto the stack
-            stack.push(result);
-            // 5. Return true as the operation was successful
-            return true;
-        } catch (error) {
-            console.error("Error in OP_ADD:", error);
-            return false; // Operation failed
-        }
-    };
-    export default OP_ADD;
-    ```
-  </details>
-</ExpandableAlert>