* @returns The median of the given data set.
*/
export const median = (dataSet: number[]): number => {
+ if (Array.isArray(dataSet) && dataSet.length === 0) {
+ return 0
+ }
if (Array.isArray(dataSet) && dataSet.length === 1) {
return dataSet[0]
}
- const sortedDataSet = dataSet.slice().sort((a, b) => a - b)
- const middleIndex = Math.floor(sortedDataSet.length / 2)
- if (sortedDataSet.length % 2 === 0) {
- return sortedDataSet[middleIndex / 2]
- }
- return (sortedDataSet[middleIndex - 1] + sortedDataSet[middleIndex]) / 2
+ dataSet = dataSet.slice().sort((a, b) => a - b)
+ return (dataSet[(dataSet.length - 1) >> 1] + dataSet[dataSet.length >> 1]) / 2
}
export const isPlainObject = (obj: unknown): boolean =>