Solutions For First 3 Assignments

session_1/Solution/Program1.dart

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+import 'dart:io';
+
+void printFibonacci(int n) {
+  List fibonacci = [0, 1];
+  for (int i = 2; i < n; i++) {
+    fibonacci.add(fibonacci[i - 1] + fibonacci[i - 2]);
+  }
+
+  stdout.write("\n");
+
+  print("First $n Fibonacci Numbers are : ");
+
+  for (var i=0;i<n;i++) {
+    stdout.write(fibonacci[i]);
+    stdout.write(' ');
+  }
+}
+
+void main() {
+  print(
+      "******** Program to print the first N Fibonacci numbers(N is specified by the user) ********");
+
+  stdout.write("Enter the value of N : ");
+  try {
+    int n = int.parse(stdin.readLineSync()!);
+    if (n <= 0) {
+      print("N must be greater than 0!!!");
+      return;
+    } else {
+      printFibonacci(n);
+    }
+  } catch (e) {
+    print("Please Enter Only Number!!!");
+  }
+}

session_1/Solution/Program2.dart

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+import 'dart:io';
+
+void isSemiPrime(int n) {
+  int original_number = n;
+  int count = 0;
+  for (int i = 2; i * i <= n; i++) {
+    while (n % i == 0) {
+      n = n ~/ i;
+      count++;
+      if (count >= 2) {
+        break;
+      }
+    }
+  }
+
+  if (n > 1) {
+    count++;
+  }
+
+  stdout.write("\n");
+
+  if (count == 2) {
+    print("$original_number is a semiprime number!!");
+  } else {
+    print("$original_number is not a semiprime number!!");
+  }
+}
+
+void main() {
+  print(
+      "******** Program to check whether the given number is semiprime or not ********");
+
+  stdout.write("Enter the value of N : ");
+  try {
+    int n = int.parse(stdin.readLineSync()!);
+    if (n <= 0) {
+      print("N must be greater than 0!!!");
+      return;
+    } else {
+      isSemiPrime(n);
+    }
+  } catch (e) {
+    print("Please Enter Only Number!!!");
+  }
+}

session_1/Solution/Program3.dart

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+import 'dart:io';
+
+bool isPrime(int n) {
+  int count = 0;
+  for (int i = 1; i <= n; i++) {
+    if (n % i == 0) {
+      count++;
+    }
+  }
+
+  return count == 2;
+}
+
+void CheckSumPrime(int length, List<int> array) {
+  int sum = 0;
+  var prime_numbers = [];
+  for (int i = 0; i < length; i++) {
+    if (isPrime(array[i])) {
+      prime_numbers.add(array[i]);
+      sum += array[i];
+    }
+  }
+
+  if (isPrime(sum)) {
+    stdout.write('\n');
+    print("Prime elements in the array are : ");
+    for (var i in prime_numbers) {
+      stdout.write(i);
+      stdout.write(' ');
+    }
+
+    stdout.write('\n\n');
+
+    print("Sum of these prime elements is : $sum");
+    stdout.write('\n');
+
+    print("Therefore,Sum of prime elements of the array is prime.");
+  } else {
+    print("Sum of prime elements of the array is Not prime.");
+  }
+}
+
+void main() {
+  print(
+      "******** Program to check whether the sum of prime elements of the array is prime or not ********");
+
+  try {
+    int length;
+    List<int> array = [];
+
+    stdout.write("Enter the length of the array : ");
+
+    length = int.parse(stdin.readLineSync()!);
+
+    if (length > 0) {
+      print("Enter the elements of the array : ");
+      for (int i = 0; i < length; i++) {
+        array.add(int.parse(stdin.readLineSync()!));
+      }
+
+      CheckSumPrime(length, array);
+    } else {
+      print("Length of the array must be greater than 0!!!");
+    }
+  } catch (e) {
+    print("Please Enter Only Number!!!");
+  }
+}

session_1/Solution/courses.dart

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+import 'dart:io';
+
+class BranchElective {
+  String courseName = '', courseCode = '';
+  String Branch = '';
+  int Year = 0;
+  Map BranchElectiveCourses = Map();
+
+  void set SetCourseName(String Cname) {
+    this.courseName = Cname;
+  }
+
+  void set SetCourseCode(String Ccode) {
+    this.courseCode = Ccode;
+  }
+
+  void AddToList() {
+    if (this.BranchElectiveCourses["$Year $Branch"] == null) {
+      this.BranchElectiveCourses["$Year $Branch"] = [
+        [this.courseName, this.courseCode]
+      ];
+    } else {
+      this
+          .BranchElectiveCourses["$Year $Branch"]
+          .add([this.courseName, this.courseCode]);
+    }
+  }
+
+  void GetBranchElectives(String branch, int year) {
+    if (this.BranchElectiveCourses.isEmpty) {
+      stdout.write("\n");
+
+      print(
+          "There are no Branch Electives for Branch : $branch  and Year : $year!!!");
+      stdout.write("\n");
+      return;
+    } else {
+      if (BranchElectiveCourses["$year $branch"] == null) {
+        stdout.write("\n");
+        print(
+            "There are no Branch Electives for Branch : $branch  and Year : $year!!!");
+        stdout.write("\n");
+        return;
+      }
+
+      List BranchElectivesList = this.BranchElectiveCourses["$year $branch"];
+
+      if (BranchElectivesList.isEmpty) {
+        stdout.write("\n");
+        print(
+            "There are no Branch Electives for Branch : $branch  and Year : $year!!!");
+        stdout.write("\n");
+        return;
+      } else {
+        stdout.write("\n");
+
+        print(
+            "List Of Branch Electives for Branch : $branch  and Year : $year are : ");
+        stdout.write("\n");
+
+        print("Sr.No\tCourse Name\tCourse Code");
+
+        for (int i = 0; i < BranchElectivesList.length; i++) {
+          print(
+              "${i + 1}\t${BranchElectivesList[i][0]}\t\t${BranchElectivesList[i][1]}");
+        }
+      }
+    }
+  }
+
+  void AddValues() {
+    String branch;
+    int year;
+
+    print("Enter branch : ");
+    branch = stdin.readLineSync()!;
+
+    print("Enter year : ");
+    year = int.parse(stdin.readLineSync()!);
+
+    this.Branch = branch;
+    this.Year = year;
+
+    String CName, CCode;
+
+    print("Enter course name : ");
+    CName = stdin.readLineSync()!;
+
+    print("Enter course code : ");
+    CCode = stdin.readLineSync()!;
+
+    this.SetCourseName = CName;
+    this.SetCourseCode = CCode;
+
+    this.AddToList();
+
+    print(
+        "\nCourse Name : $CName with Course Code : $CCode for Branch : $branch and Year : $year has been added to the Branch Electives!!\n");
+  }
+}
+
+class OpenElective {
+  String courseName = '', courseCode = '';
+  List<List> OpenElectiveCourses = [];
+
+  void set SetCourseName(String Cname) {
+    this.courseName = Cname;
+  }
+
+  void set SetCourseCode(String Ccode) {
+    this.courseCode = Ccode;
+  }
+
+  void AddToList() {
+    this.OpenElectiveCourses.add([this.courseName, this.courseCode]);
+  }
+
+  void GetOpenElectives() {
+    if (this.OpenElectiveCourses.isEmpty) {
+      stdout.write("\n");
+      print("There are no Open Electives!!!");
+      return;
+    } else {
+      stdout.write("\n");
+      print("List Of Open Electives : ");
+      stdout.write("\n");
+      print("Sr.No\tCourse Name\tCourse Code");
+      for (int i = 0; i < this.OpenElectiveCourses.length; i++) {
+        print(
+            "${i + 1}\t${OpenElectiveCourses[i][0]}\t\t${OpenElectiveCourses[i][1]}");
+      }
+    }
+  }
+
+  void AddValues() {
+    String CName, CCode;
+
+    print("Enter course name : ");
+    CName = stdin.readLineSync()!;
+
+    print("Enter course code : ");
+    CCode = stdin.readLineSync()!;
+
+    this.SetCourseName = CName;
+    this.SetCourseCode = CCode;
+    this.AddToList();
+
+    print(
+        "\nCourse Name : $CName with Course Code : $CCode  has been added to the Open Electives!!\n");
+  }
+}
+
+void main() {
+  try {
+    bool flag = false;
+    BranchElective branchElective = BranchElective();
+    OpenElective openelective = OpenElective();
+    do {
+      print("Enter type of user 1.Admin 2.Student");
+      int UserType = int.parse(stdin.readLineSync()!);
+
+      if (UserType == 1) {
+        print("Enter course type 1.Open elective 2.Branch elective");
+        int CourseType = int.parse(stdin.readLineSync()!);
+        if (CourseType == 1) {
+          openelective.AddValues();
+        } else if (CourseType == 2) {
+          branchElective.AddValues();
+        } else {
+          print("Invalid Input!!!");
+          print("Please Select number 1 or 2.");
+        }
+      } else if (UserType == 2) {
+        String branch;
+        int year;
+
+        print("Enter branch : ");
+        branch = stdin.readLineSync()!;
+
+        print("Enter year : ");
+        year = int.parse(stdin.readLineSync()!);
+
+        openelective.GetOpenElectives();
+        branchElective.GetBranchElectives(branch, year);
+      } else {
+        print("Invalid Input!!!");
+        print("Please Select number 1 or 2.");
+      }
+
+      stdout.write('Do you want to Add or View Courses Again?(Y/N) : ');
+
+      String input = stdin.readLineSync()!;
+      if (input == 'Y' ||
+          input == 'y' ||
+          input == 'Yes' ||
+          input == "yes" ||
+          input == 'YES') {
+        flag = true;
+      } else {
+        flag = false;
+      }
+    } while (flag);
+    print("Thank you!!");
+  } catch (e) {
+    print("Exception Occured!!!!");
+    print("Exception : $e");
+  }
+}

session_3/Solution/README.md

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+# trivia_app
+
+NUMBER TRIVIA APP
+
+## Getting Started 🤩😍
+
+
+* [Installation Guide for Flutter](https://flutter.dev/docs/get-started/install).
+* After setting up flutter download the code and then unzip.
+* Open code in  Visual Studio Code Editor.([Installation Guide for Visual Studio Code](https://code.visualstudio.com/docs))
+* [Setup flutter in VS Code](https://docs.flutter.dev/development/tools/vs-code).
+* Optional : Connect Laptop and your Mobile through USB cable then enable USB debugging option in your mobile.([Steps to enable USB debugging option in android](https://www.youtube.com/results?search_query=enable+debugging+mode+android))
+* Goto trivia_app/lib under this execute the file main.dart without debugging i.e Click on Run Without Debugging option in vs code.
+
+## App Features ✨
+
+* Added App Icon.
+* Added Splash Screen.
+* Used Different Fonts.
+* Added Images.
+* Validation Is Done For User Input.
+* Added Multiple Floating Buttons (Copy,Refresh and Exit) To Bottom Right Corner.
+* Added Confirmation AlertDialog.
+* Added Copy To Clipboard Option.
+
+## App Demo Video 🎥🎥
+
+* [NUMBER TRIVIA APP DEMO VIDEO](trivia_app/images/Demo_Video.mp4)
+
+## App GIF
+
+<p> <img src="trivia_app/images/Demo.gif" width="200">
+