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g2601_2700.s2648_generate_fibonacci_sequence.readme.md Maven / Gradle / Ivy

2648\. Generate Fibonacci Sequence

Easy

Write a generator function that returns a generator object which yields the **fibonacci sequence**.

The **fibonacci sequence** is defined by the relation Xn = Xn-1 + Xn-2.

The first few numbers of the series are `0, 1, 1, 2, 3, 5, 8, 13`.

**Example 1:**

**Input:** callCount = 5

**Output:** [0,1,1,2,3]

**Explanation:** 

    const gen = fibGenerator(); 
    gen.next().value; // 0 
    gen.next().value; // 1 
    gen.next().value; // 1 
    gen.next().value; // 2 
    gen.next().value; // 3

**Example 2:**

**Input:** callCount = 0

**Output:** []

**Explanation:** gen.next() is never called so nothing is outputted

**Constraints:**

*   `0 <= callCount <= 50`