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fibonacci javascript Code Snippet in 2023

mathalgorithmintermediate

Last Updated: 4 February 2023

Generates an array, containing the Fibonacci sequence, up until the nth term.

  • Use Array.from() to create an empty array of the specific length, initializing the first two values (0 and 1).
  • Use Array.prototype.reduce() and Array.prototype.concat() to add values into the array, using the sum of the last two values, except for the first two.
const fibonacci = n => Array.from({ length: n }).reduce( (acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i), [] );
fibonacci(6); // [0, 1, 1, 2, 3, 5]

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