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Birmingham | 26-ITP-May |Gabriel Pawuoi | Sprint 1 | Fix median function #1398

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Birmingham | 26-ITP-May |Gabriel Pawuoi | Sprint 1 | Fix median function #1398

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9 changes: 6 additions & 3 deletions Sprint-1/fix/median.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,9 +6,12 @@
// or 'list' has mixed values (the function is expected to sort only numbers).

function calculateMedian(list) {
const middleIndex = Math.floor(list.length / 2);
const median = list.splice(middleIndex, 1)[0];
return median;
if (!Array.isArray(list)) return null;
const numbers = list.filter(n => typeof n === "number");
if (numbers.length === 0) return null;
const sorted = [...numbers].sort((a, b) => a - b);
const mid = Math.floor(sorted.length / 2);
return sorted.length % 2 !== 0 ? sorted[mid] : (sorted[mid - 1] + sorted[mid]) / 2;
}

module.exports = calculateMedian;
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