Question

How to find the sum of the even valued in fibonacci sequence with TypeScript

Answer 1

function sumEvenFibonacci(limit: number): number {
    let a: number = 1, b: number = 2; // Starting Fibonacci numbers
    let sum: number = 0;

    while (a <= limit) {
        if (a % 2 === 0) {
            sum += a; // Add to sum if the number is even
        }
        [a, b] = [b, a + b]; // Generate the next Fibonacci number
    }

    return sum;
}

const limit = 4000000;

console.log(sumEvenFibonacci(limit)); 


 
/*
run:
     
4613732 
      
*/

 

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