Update README.md

Author: SuRu190

22-Star-Pattern/README.md

@@ -1,25 +1,71 @@
-# 22 - Pass Fail
+# ⭐ Star Pattern Programs (JavaScript)
 
-## ✅ Objective  
-Check whether a student has passed or failed based on marks.  
+This folder contains **10 JavaScript programs** to print different star and number patterns.  
+These exercises help in building strong **looping logic** and practicing **nested loops** in JavaScript.
 
-## 💡 Concepts Used  
-- Variables in JavaScript (`let`)  
-- Conditional statements (`if-else`)  
-- Comparison operator (`>=`)  
-- Console output (`console.log()`)  
+---
 
-## 📘 Code Explanation  
-The program declares a variable `marks` with the value `60`.  
-- If `marks >= 50`, it prints **"Pass"**.  
-- Otherwise, it prints **"Fail"**.  
+## ✅ Objectives
+- Understand **loop control** for rows and columns.  
+- Practice **nested `for` loops** to build patterns.  
+- Learn alignment using `" ".repeat()` and `"*".repeat()`.  
+- Strengthen problem-solving through **pattern design**.  
 
+---
+
+## 📂 Files in this Folder
+
+1. **Right_Angled_Triangle.js** → Right-aligned right-angled triangle of stars.  
+2. **Pyramid.js** → Pyramid of stars.  
+3. **Inverted_Triangle.js** → Inverted triangle of stars.  
+4. **Number_Triangle.js** → Increasing number triangle.  
+5. **Number_Pyramid.js** → Right-aligned number pyramid.  
+6. **Number_Full_Pyramid.js** → Full pyramid with numbers.  
+7. **Palindrome_Number_Pyramid.js** → Palindrome number pyramid.  
+8. **Hollow_Square.js** → Hollow square star pattern.  
+9. **X_Pattern.js** → X shape pattern using stars.  
+10. **Diamond.js** → Diamond star pattern.  
+
+---
+
+## 💡 Concepts Practiced
+- `for` loops (row iteration)  
+- Nested `for` loops (row × column control)  
+- String manipulation (`repeat`, concatenation)  
+- Printing aligned output with `console.log()`  
+- Pattern symmetry (top/bottom halves, left/right alignment)  
+
+---
+
+## 📘 Example: Diamond Pattern (10_Diamond.js)
+
+### Code
 ```javascript
-// Write a program to check pass or fail based on marks.
+let n = 5;
+
+// upper half
+for (let i = 1; i <= n; i++) {
+    let spaces = " ".repeat(n - i);
+    let stars = "*".repeat(2 * i - 1);
+    console.log(spaces + stars);
+}
 
-let marks = 60;
-if (marks >= 50) {
-    console.log("Pass");
-} else {
-    console.log("Fail");
+// lower half
+for (let i = n - 1; i >= 1; i--) {
+    let spaces = " ".repeat(n - i);
+    let stars = "*".repeat(2 * i - 1);
+    console.log(spaces + stars);
 }
+```
+### Output
+```javascript
+    *    
+   ***   
+  *****  
+ ******* 
+*********
+ ******* 
+  *****  
+   ***   
+    *    
+