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LeetCode solutions

2775. Generate Fibonacci Sequence

My accepted JavaScript solution to LeetCode problem 2775, Generate Fibonacci Sequence, running in 41ms.

  • Difficulty: Easy
  • JavaScript
  • Runtime 41ms
  • Memory 53.4MB

Read the problem on LeetCode View on GitHub

The problem statement is LeetCode’s and stays on their site. What follows is my accepted solution.

JavaScript

Accepted on LeetCode — runtime 41ms, memory 53.4MB, accepted 2025-12-31.

javascript
/**
 * @return {Generator<number>}
 */
var fibGenerator = function*() {
    let a = 0, b = 1;
    while (true) {
        yield a;
        [a, b] = [b, a + b];
    }
};

/**
 * const gen = fibGenerator();
 * gen.next().value; // 0
 * gen.next().value; // 1
 */

Source