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⚡️ Speed up function fibonacci by 51,311% #1094

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⚡️ Speed up function fibonacci by 51,311% #1094

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12 changes: 11 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 @@ -12,7 +12,17 @@ function fibonacci(n) {
if (n <= 1) {
return n;
}
return fibonacci(n - 1) + fibonacci(n - 2);

let prev = 0;
let curr = 1;

for (let i = 2; i <= n; i++) {
const next = prev + curr;
prev = curr;
curr = next;
}

return curr;
}

/**
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