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 // void main() {    //Create an instance of the class Calculate a=Calculate(); print("Recursion of factorial:"+ a.factorial(4).toString()); print("Linear Search:"+ a.linearSearch([2,11,5,32,6,23],5)); } // output Result:24 Result:5 // Create  Calculate class class Calculate with LinearSearch {   factorial(int n){     if(n==0 || n==1){       return 1;     }else{       return n*factorial(n-1);     }   }    } //Create Linear search method using mixin class mixin LinearSearch {      // Linear search method      linearSearch(List<int>? list,int x){    int i=0; for( i; i<list!.length; i++){        if(list[i]==x){          print(list[i].toString());        }     }} }

//Create main() function of dart   void main(){ Factorial factorial=Factorial(); print("Is factorial:"+ factorial.factorial(4).toString()); } //output Result=> factorial:24 ************************************************************* //create a class of factorial  class Factorial{ //this is a method of factorial   factorial(int n){     if(n==0 || n==1){       return 1;     }else{       return n*factorial(n-1);     }   } }

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 Encode and decode JSON data in dart language import 'dart:convert'; void main() {   // Original data as a Dart map   Map<String, dynamic> originalData = {     'field1': 'value1',     'field2': 42,     'field3': true,   };   // Encode the Dart map to JSON string   String jsonString = jsonEncode(originalData);   print('Original JSON String:');   print(jsonString);   // Encode the JSON string to base64   String base64EncodedString = base64.encode(utf8.encode(jsonString));   print('\nBase64 Encoded String:');   print(base64EncodedString);   // Decode the base64 string to JSON string   String decodedJsonString = utf8.decode(base64.decode(base64EncodedString));   print('\nDecoded JSON String:');   print(decodedJsonString);   // Decode the JSON string to a Dart map   Map<String, dynamic> decodedData = jsonDecode(decodedJsonString);   print('\nDecoded Dart Ma...

Find the third largest number in an Array  void main() {   List<int> numbers = [10, 5, 8, 20, 15];   // Ensure the array has at least three elements   if (numbers.length < 3) {     print("Array should have at least three elements");     return;   }   // Sort the array in descending order   numbers.sort((a, b) => b.compareTo(a));   // Get the third largest number   int thirdLargest = numbers[2];   print("The third largest number is: $thirdLargest"); } Thanks for reading the article ...

 Find the third largest number without sort() method // this the main() function of dart  void main() {   List<int> numbers = [10, 5, 8, 20, 15];   // Ensure the array has at least three elements   if (numbers.length < 3) {     print("Array should have at least three elements");     return;   }   int findThirdLargest (List<int> arr) {     int firstMax = arr.removeAt(arr.indexOf(arr.reduce((a, b) => a > b ? a : b)));     int secondMax = arr.removeAt(arr.indexOf(arr.reduce((a, b) => a > b ? a : b)));     int thirdMax = arr.reduce((a, b) => a > b ? a : b);     return thirdMax;   }   int thirdLargest = findThirdLargest(List.from(numbers));   print("The third largest number is: $thirdLargest"); }

 // This Main() Function of Dart void main(){    //****************************************   MySingleton mS=MySingleton();   mS.doSomething();   mS.name="Surya Prakash";   mS.age="29";  //******************************************************  } //*********************** Singlton Class *********************************** class MySingleton {   // Private constructor to prevent external instantiation   MySingleton._privateConstructor();   // The single instance of the class   static final MySingleton _instance = MySingleton._privateConstructor();   // Factory constructor to provide access to the instance   factory MySingleton() {     return _instance;   }   // Add your methods and properties here   void doSomething() {     print('Singleton is doing something);   }   //  Create Varialbles     String? name;   String? age;     }