Lecture 01 Exercises added

ThusharaX · ThusharaX · commit bdd30167288f · 2021-06-29T09:55:32.000+05:30
diff --git a/Exercises/L01/Exercise1.java b/Exercises/L01/Exercise1.java
@@ -0,0 +1,16 @@
+// Lecture 01 Exercise 01
+/*
+    Write a Java program to display your name and address in 3 lines.
+*/
+
+public class Exercise1 {
+
+    public static void main(String args[]) {
+        System.out.println("Thushara Thiwanka");
+
+        System.out.println("Z/00,");
+        System.out.println("Earth,");
+        System.out.println("Solar System");
+    }
+    
+}
diff --git a/Exercises/L01/Exercise2.java b/Exercises/L01/Exercise2.java
@@ -0,0 +1,25 @@
+// Lecture 01 Exercise 02
+/*
+    Write a java program to input the length and the width of a rectangle and
+    calculate and print the perimeter.
+*/
+
+import java.util.Scanner;
+
+public class Exercise2 {
+    public static void main(String args[]) {
+        float length, width;
+        float perimeter = 0;
+
+        Scanner myScanner = new Scanner(System.in);
+
+        System.out.print("Enter length : ");
+        length = myScanner.nextFloat();
+        System.out.print("Enter width : ");
+        width = myScanner.nextFloat();
+
+        perimeter = (length + width) * 2;
+
+        System.out.println("Perimeter = " + perimeter);
+    }
+}
diff --git a/Exercises/L01/Exercise3.java b/Exercises/L01/Exercise3.java
@@ -0,0 +1,34 @@
+// Lecture 01 Exercise 03
+/*
+    WWrite a program to input 3 integers and print the largest and
+    the smallest of the 3 numbers entered.
+*/
+
+import java.util.Scanner;
+
+public class Exercise3 {
+    public static void main(String[] args) {
+        int max = 0, min = 0, num = 0, count = 1;
+
+        Scanner myScanner = new Scanner(System.in);
+
+        System.out.print("Enter Number : ");
+        max = myScanner.nextInt();
+        min = max;
+        while(count < 3) {
+            System.out.print("Enter Number : ");
+            num = myScanner.nextInt();
+            if(num > max) {
+                max = num;
+            }
+            else if(num < min) {
+                min = num;
+            }
+            count++;
+        }
+
+        System.out.println("Largest Number = " + max);
+        System.out.println("Smallest Number = " + min);
+
+    }
+}
diff --git a/Exercises/L01/Exercise4.java b/Exercises/L01/Exercise4.java
@@ -0,0 +1,29 @@
+// Lecture 01 Exercise 04
+/*
+    Write a program to input 10 numbers from the keyboard and
+    find how many odd numbers and how many even numbers were entered. 
+*/
+
+import java.util.Scanner;
+
+public class Exercise4 {
+    public static void main(String[] args) {
+        int number, evenCount = 0, oddCount = 0, count = 0;
+
+        Scanner myScanner = new Scanner(System.in);
+
+        while (count < 10) {
+            System.out.print("Enter Number : ");
+            number = myScanner.nextInt();
+            if (number % 2 == 0) {
+                evenCount += 1;
+            } else {
+                oddCount += 1;
+            }
+            ++count;
+        }
+
+        System.out.println("Even Numbers : " + evenCount);
+        System.out.println("Odd Numbers : " + oddCount);
+    }
+}
