java program to display Fibonacci series up to a limit

Fibonacci series is a series of numbers in which each number ( Fibonacci number ) is the sum of the two preceding numbers. The simplest is the series 1, 1, 2, 3, 5, 8, etc.

To find Fibonacci series upto a given number

public static void main(String[] args) {
  public class Fibonacci {
    int i = 1, n = 10, t1 = 1, t2 = 1;
    System.out.println("First " + n + " terms: ");
    while (i <= n)
    {
        System.out.println(" \t \t" + t1);
        int sum = t1 + t2;
        t1 = t2;
        t2 = sum;
        i++;
    }
  }  
}    
    

To Find using user input range

import java.util.*;
public class FibonacciUserInput {
  public static void main(String[] args) {
    int i = 1, n, t1 = 1, t2 = 1;
    Scanner kb = new Scanner(System.in);
    System.out.print("Enter the limit: ");
    n = kb.nextInt();
    System.out.println("First " + n + " terms: ");
    while (i <= n)
    {
        System.out.println(" \t \t" + t1);
        int sum = t1 + t2;
        t1 = t2;
        t2 = sum;
        i++;
    }
  }
}         
    

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