Number Trivia assignment done

assignments/assignment1_dart_codes/1_fibonacci.dart

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+import 'dart:io';
+
+//function to print the fibonacci series
+void fibonacci_series(int n) {
+  //initialize initial variables a,b
+  int a = 0;
+  int b = 1;
+  //print the values of a ,b
+  print(a);
+  print(b);
+  int c;
+  //loop for n-2 times
+  for (int i = 0; i < n - 2; i++) {
+    //add a and b and store the value in c and print its value
+    c = a + b;
+    print(c);
+    //update the values of a and b
+    a = b;
+    b = c;
+  }
+}
+
+void main() {
+  print("Enter no. of terms to be printed: ");
+  //input n
+  int n = int.parse(stdin.readLineSync()!);
+  print("The $n fibonacci terms are: ");
+  //call the function
+  fibonacci_series(n);
+}

assignments/assignment1_dart_codes/2_semiprime.dart

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+import 'dart:io';
+
+//function to chekc if a number is semiprime or not
+bool semiprime(int num) {
+  //a number is semiprime if it is product of two prime numbers
+  //count will be storing the count of numbers whose product = num
+  int count = 0;
+
+  for (int i = 2; count < 2 && i * i <= num; ++i) {
+    while (num % i == 0) {
+      num = num ~/ i;
+      ++count; // Increment count of prime numbers
+    }
+  }
+
+  // If number is greater than 1, add it to the count variable
+  // as it indicates the number remain is prime number
+  if (num > 1) ++count;
+
+  // Return '1' if count is equal to '2' else
+  // return '0'
+  return (count == 2);
+}
+
+void main() {
+  print("Enter a number: ");
+  //input n
+  int n = int.parse(stdin.readLineSync()!);
+  if (semiprime(n))
+    print("$n is a semiprime ");
+  else
+    print("$n is not a semiprime ");
+}

assignments/assignment1_dart_codes/3_prime_sum.dart

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+import 'dart:io';
+
+//Function to check prime numbers
+bool checkPrime(int num) {
+  bool res = true;
+  //repeat a loop from t to sqrt(num)
+  for (int i = 2; i * i < num; i++) {
+    //if i divides num,then the number is not prime,so break from the loop
+    if (num % i == 0) {
+      res = false;
+      break;
+    }
+  }
+  //return bool value of res
+  return res;
+}
+
+//Checking prime numbers in an array and summing them
+bool prime_nums(List<int> arr) {
+  int sum = 0;
+  //repeat a loop for all elements of arr
+  for (int i = 0; i < arr.length; i++) {
+    //if that number is prime and that num is not 1 then add that element to the sum
+    if (checkPrime(arr[i]) && arr[i] != 1) sum += arr[i];
+  }
+  //check if the sum is now a prime number or not and return the value
+  return checkPrime(sum);
+}
+
+void main() {
+  print("Enter number of elements");
+  //input size of array
+  int n = int.parse(stdin.readLineSync()!);
+  print("Enter an array: ");
+  //array declaration
+  var arr = <int>[];
+  //input array elements
+  for (int i = 0; i < n; i++) {
+    arr.add(int.parse(stdin.readLineSync()!));
+  }
+  //call the function prime_nums
+  if (prime_nums(arr))
+    print("Sum of prime elements is prime\n");
+  else
+    print("Sum of prime elements is non-prime\n");
+}

assignments/assignment1_dart_codes/4_courseElective.dart

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+import 'dart:io';
+
+//class definitions
+class Open_Elective {
+  //string variables for coursename and coursecode
+  var courseName = <String>[];
+  var courseCode = <String>[];
+  //functions
+  void addCourse() {
+    //input course name and code and add them to repective lists
+    print("Enter course name and code");
+    //input in a single line both name and code
+    String? temp = stdin.readLineSync();
+    //split the temp input by " " and assign it to a list
+    var tempList = temp!.split(" ");
+    //0th index of list represent course name and 1st index is the course code
+    courseName.add(tempList[0]);
+    courseCode.add(tempList[1]);
+  }
+
+  //function to print all the course name and code
+  void viewCourse() {
+    for (int i = 0; i < courseCode.length; i++)
+      print("Course Name: ${courseName[i]}  Course Code: ${courseCode[i]}");
+  }
+}
+
+//branch elective class definition inherited from open elective class
+class Branch_Elective extends Open_Elective {
+  //variables of this class
+  var branch, year;
+  //functions
+  void addElective() {
+    //input branch name and year
+    print("Enter branch and year");
+    String? temp = stdin.readLineSync();
+    var tempList = temp!.split(" ");
+    branch = tempList[0];
+    year = tempList[1];
+    //call the function to add elective coure for that brach and year
+    addCourse();
+  }
+
+  //function to print the course name and code of that specific student whose branch and elective are given
+  void viewElective(String br, String yr) {
+    //repeat a loop
+    for (int i = 0; i < courseCode.length; i++) {
+      //if given branch and year matches with the one in the list then print its name and code
+      if (branch == br && year == yr)
+        print("Course Name: ${courseName[i]}  Course Code: ${courseCode[i]}");
+    }
+  }
+}
+
+void main() {
+  //create class objects
+  var openElectiveObject = new Open_Elective();
+  var branchElectiveObject = new Branch_Elective();
+  while (true) {
+    print("\nEnter type of user 1.Admin 2.Student 3. Exit");
+    //input user's choice
+    int user_choice = int.parse(stdin.readLineSync()!);
+    if (user_choice == 1) {
+      print("Enter course type 1.Open elective 2.Branch elective");
+      //input user's choice on elective
+      int elective_choice = int.parse(stdin.readLineSync()!);
+      //if choice is 1, call addCourse() function
+      if (elective_choice == 1)
+        openElectiveObject.addCourse();
+      //else call function to addElective()
+      else if (elective_choice == 2) branchElectiveObject.addElective();
+    } else if (user_choice == 2) {
+      print("Enter branch and year");
+      //input user's branhc and year
+      String? temp = stdin.readLineSync();
+      var templist = temp!.split(" ");
+      String branch = templist[0];
+      String year = templist[1];
+      //print all open electives
+      print("\nOpen Electives are: ");
+      openElectiveObject.viewCourse();
+      //print all branch electives according to student's branch and year
+      print("\nBranch Electives are: ");
+      branchElectiveObject.viewElective(branch, year);
+    } else {
+      print("Thank you");
+      break;
+    }
+  }
+}

assignments/assignment2_number_trivia/number_trivia/.gitignore

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+# 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

assignments/assignment2_number_trivia/number_trivia/.metadata

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+# 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

assignments/assignment2_number_trivia/number_trivia/README.md

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+# NUMBER TRIVIA
+
+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:
+
+- [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.
+
+## About the project
+
+The NUMBER TRIVIA is an app in which user enters a number and some interesting facts about that number is displayed.
+The facts regarding that number can be about some Math, Trivia or some important year. 
+
+## Features Added
+
+1. Added backgroud image
+2. App Icon added
+3. More than two Text fonts and styles used
+4. Splash screen added
+
+## App recording 
+
+
+
+
+
+https://user-images.githubusercontent.com/69628293/150630905-18fa2b88-f2b3-49b4-9bb9-1862e9d73fb8.mp4
+

assignments/assignment2_number_trivia/number_trivia/analysis_options.yaml

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+# 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

assignments/assignment2_number_trivia/number_trivia/android/.gitignore

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+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