Assignment 2 : Solved. (session_3/code/Assignment2)

session_1/solutions/Problem_1.dart

@@ -0,0 +1,23 @@
+import 'dart:io';
+
+// FUnction to print first N fibonacci numbers
+void fibo_n(int n) {
+  int a = 0, b = 1;
+  int c = 1;
+  for (int i = 0; i < n; i++) {
+    stdout.write(" ${a}");
+    c = a + b;
+    a = b;
+    b = c;
+  }
+}
+
+//driver code
+int main() {
+  print("Program to Print first N fibonacci numbers.");
+  stdout.write("Enter the limit for FIbonacci Numbers : ");
+  int? n = int.parse(stdin.readLineSync()!);
+  print("The First ${n} fibonacci numbers are : ");
+  fibo_n(n);
+  return 0;
+}

session_1/solutions/problem_2.dart

@@ -0,0 +1,47 @@
+import 'dart:io';
+
+// Function to check if a number is prime
+bool isPrime(int num) {
+  if (num == 1) {
+    return false;
+  }
+  if (num < 4) {
+    return true;
+  }
+
+  for (int i = 2; i * i <= num; i++) {
+    if (num % i == 0) {
+      return false;
+    }
+  }
+  return true;
+}
+
+// Function to check if a number is semi-prime
+bool isSemiPrime(int num) {
+  for (int i = 2; i * i <= num; i++) {
+    if (num % i == 0) {
+      int div = num ~/ i;
+      if (isPrime(i) && isPrime(div)) {
+        stdout.write("${num} = ${i} * ${div} = > ");
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+//driver  code
+int main() {
+  print("Program to check whether a given number is Semi-prime or not :");
+  print(
+      " Semi-prime :  a number that is product of 2 prime numbers like 6,9,15 etc");
+  stdout.write("Enter a number : ");
+  int? num = int.parse(stdin.readLineSync()!);
+  if (isSemiPrime(num)) {
+    print(" ${num} is semi-Prime");
+  } else {
+    print("${num} is not semi-Prime ");
+  }
+  return 0;
+}

session_1/solutions/problem_3.dart

@@ -0,0 +1,43 @@
+import 'dart:io';
+
+// Function to check if a number is prime
+bool isPrime(int num) {
+  if (num == 1) {
+    return false;
+  }
+  if (num < 4) {
+    return true;
+  }
+
+  for (int i = 2; i * i <= num; i++) {
+    if (num % i == 0) {
+      return false;
+    }
+  }
+  return true;
+}
+
+// driver code
+int main() {
+  print(
+      "Program to check if the sum of prime numbers in an array is prime or not.");
+  stdout.write("Enter size of the array : ");
+  int? size = int.parse(stdin.readLineSync()!);
+  int sum = 0;
+  var arr = List.generate(size, (index) => index.toInt());
+  for (int i = 0; i < size; i++) {
+    stdout.write("Enter number ${i + 1} : ");
+    arr[i] = int.parse(stdin.readLineSync()!);
+  }
+  for (int i = 0; i < size; i++) {
+    if (isPrime(arr[i])) {
+      sum += arr[i];
+    }
+  }
+  if (isPrime(sum)) {
+    print("Sum is ${sum} and it is Prime.");
+  } else {
+    print("Sum is ${sum} and it is not Prime.");
+  }
+  return 0;
+}

session_1/solutions/problem_4.dart

@@ -0,0 +1,90 @@
+import 'dart:io';
+
+//Creating respective classes
+class OpenElective {
+  String courseCode, courseName;
+  OpenElective(this.courseCode, this.courseName);
+}
+
+class BranchElective extends OpenElective {
+  String branch, year;
+
+  BranchElective(this.branch, this.year, String courseCode, String courseName)
+      : super(courseCode, courseName);
+}
+
+//Driver Code
+int main() {
+  List<OpenElective> open_electives = [
+    OpenElective('OE500', 'AI')
+  ]; //some default courses
+  List<BranchElective> branch_electives = [
+    BranchElective('CSE', '3RD', 'CS601', 'DBMS') //some default courses
+  ];
+  bool check = true;
+  while (check) {
+    String branch = "", year = "", course_name = "", course_code = "";
+    stdout.write(
+        "Enter type of user 1. Admin 2. Student ,Any other number to Exit : ");
+    int? user = int.parse(stdin.readLineSync()!);
+    switch (user) {
+      case 1:
+        int course;
+        do {
+          stdout
+              .write("Enter course type 1.Open elective 2.Branch elective : ");
+          course = int.parse(stdin.readLineSync()!).toInt();
+          if (course < 1 || course > 2) {
+            print("Wrong input, Try Again ");
+          }
+        } while (course < 1 || course > 2);
+
+        stdout.write("Enter Course name : ");
+        course_name = stdin.readLineSync().toString().toUpperCase();
+        stdout.write("Enter Course code : ");
+        course_code = stdin.readLineSync().toString().toUpperCase();
+        switch (course) {
+          case 1:
+            open_electives.add(OpenElective(course_code, course_name));
+            break;
+          case 2:
+            stdout.write("Enter Branch and year separated by a space : ");
+            String b_y = stdin.readLineSync().toString();
+            List<String> ip = b_y.split(" ");
+            branch = ip[0].toUpperCase();
+            if (ip.length > 1) year = ip[1].toUpperCase();
+            // stdout.write("Enter Year : ");
+            // String? year = stdin.readLineSync();
+            branch_electives
+                .add(BranchElective(branch, year, course_code, course_name));
+            break;
+          default:
+            print("Wrong input ");
+        }
+        break;
+      case 2:
+        stdout.write("Enter Branch and year separated by a space : ");
+        String b_y = stdin.readLineSync().toString();
+        List<String> ip = b_y.split(" ");
+        branch = ip[0].toUpperCase();
+        if (ip.length > 1) year = ip[1].toUpperCase();
+        print("Branch Electives : ");
+        for (BranchElective x in branch_electives) {
+          if (x.branch == branch && x.year == year) {
+            stdout.write(
+                "${x.branch}    ${x.year}    ${x.courseCode}     ${x.courseName} \n");
+          }
+        }
+        print("Open Electives : ");
+        for (OpenElective x in open_electives) {
+          stdout.write("${x.courseCode}     ${x.courseName}\n");
+        }
+        break;
+      default:
+        check = false;
+        break;
+    }
+  }
+
+  return 0;
+}

session_3/code/assignment2/.gitignore

@@ -0,0 +1,46 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Web related
+lib/generated_plugin_registrant.dart
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

session_3/code/assignment2/.metadata

@@ -0,0 +1,10 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 77d935af4db863f6abd0b9c31c7e6df2a13de57b
+  channel: stable
+
+project_type: app

session_3/code/assignment2/README.md

@@ -0,0 +1,21 @@
+# assignment2
+
+A new Flutter project.
+
+## Getting Started
+
+This project is a starting point for a Flutter application.
+
+A few resources to get you started if this is your first Flutter project:
+Screen Recording : 
+<p align="center">
+<img src="assets\screen.gif"  />
+</align>
+
+
+- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
+- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
+
+For help getting started with Flutter, view our
+[online documentation](https://flutter.dev/docs), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.

session_3/code/assignment2/analysis_options.yaml

@@ -0,0 +1,29 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at
+  # https://dart-lang.github.io/linter/lints/index.html.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

session_3/code/assignment2/android/.gitignore

@@ -0,0 +1,13 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

session_3/code/assignment2/android/app/build.gradle

@@ -0,0 +1,68 @@
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion flutter.compileSdkVersion
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "com.example.assignment2"
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}