For Loop

Author: kishanrajput23

23.For_Loops/README.md

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+# Java Tutorial: The for Loop in Java
+
+### For loop:
+- For loop in java is used to iterate a block of code multiple times.
+- Use for loop only when the exact number of iterations needed is already known to you. 
+- Syntax :
+```
+/* for (initialize; check_bool_expression; update){
+            //code;
+} */
+```
+- Initializer: Initializes the value of a variable. This part is executed only once.
+- check_bool_expression: The code inside the for loop is executed only when this condition returns true.
+- update: Updates the value of the initial variable.
+- Example :
+```
+for (i=7; i!=0; i--){
+    System.out.println(i);
+}
+```
+- The above for loop initializes the value of i=7 and keeps printing as well as decrementing the value of i till i do not get equals to 0.
+
+### Flow control of for loop : 
+
+![image](https://user-images.githubusercontent.com/70385488/151354811-2f095c94-83f7-4579-9f65-0898531cdbc5.png)
+
+**Quick Quiz 1:** Write a program to print first n odd numbers using a for loop.
+
+**Quick Quiz 2:** Write a program to print first n natural numbers in reverse order.
+
+### Code as described in the video :
+
+```
+public class cwh_23_for_loop {
+    public static void main(String[] args) {
+//        for (int i=1; i<=10; i++){
+//            System.out.println(i);
+//        }
+        // 2i = Even Numbers = 0, 2, 4, 6, 8
+        // 2i+1 = Odd Numbers = 1, 3, 5, 7, 9
+        //int n = 3;
+        //for (int i =0; i<n; i++){
+        //    System.out.println(2*i+1);
+        //}
+
+        for(int i=5; i!=0; i--){
+            System.out.println(i);
+        }
+    }
+}
+```
+
+**Handwritten Notes: [Click to Download](https://api.codewithharry.com/media/videoSeriesFiles/courseFiles/java-tutorials-for-beginners-23/Chapter_5.pdf)**
+
+**Ultimate Java Cheatsheet: [Click To Download](https://api.codewithharry.com/media/videoSeriesFiles/courseFiles/java-tutorials-for-beginners-23/UltimateJavaCheatSheet.pdf)**