by @kodeazy

flutter what is fibonacci series and example program to print upto 15 numbers using recursion in dart?

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  • In fibonacci series next number is sum of previous two numbers.
  • F(n)=F(n-1)+F(n-2).
  • Initial two numbers are 0,1.
  • Example of fibonacci series 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55 etc.

  • Below is example program of fibonacci series without using recursion in dart

     printFibonacciSeries(int total, int previousNumber1, int previousNumber2) {
      if (total > 0) {
           int nextNumber = previousNumber1 + previousNumber2;
           print(nextNumber);
           previousNumber1 = previousNumber2;
           previousNumber2 = nextNumber;
           printFibonacciSeries(total - 1, previousNumber1, previousNumber2);
      }
 }
  void main() {
      int previousNumber1 = 0, previousNumber2 = 1, nextNumber, total = 15;
      print(previousNumber1);
      print(previousNumber2);
      printFibonacciSeries(total - 2, previousNumber1, previousNumber2);
 }

    Output:

    0
1
1
2
3
5
8
13
21
34
55
89
144
233
377