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⚡️ Speed up function fibonacci by 129,878% #1090

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codeflash-ai wants to merge 1 commit into from
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⚡️ Speed up function fibonacci by 129,878% #1090

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10 changes: 9 additions & 1 deletion code_to_optimize_js/fibonacci.js
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Original file line number Diff line number Diff line change
Expand Up @@ -8,11 +8,19 @@
* @param {number} n - The index of the Fibonacci number to calculate
* @returns {number} - The nth Fibonacci number
*/
const cache = new Map();

function fibonacci(n) {
if (cache.has(n)) return cache.get(n);
if (n <= 1) {
cache.set(n, n);
return n;
}
return fibonacci(n - 1) + fibonacci(n - 2);
const a = fibonacci(n - 1);
const b = fibonacci(n - 2);
const res = a + b;
cache.set(n, res);
return res;
}

/**
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