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Averages/Median: Difference between revisions
added ReScript
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</lang>
=={{header|ReScript}}==
<lang ReScript>let median = (arr) =>
{
let float_compare = (a, b) => {
let diff = a -. b
if diff == 0.0 { 0 } else
if diff > 0.0 { 1 } else { -1 }
}
let _ = Js.Array2.sortInPlaceWith(arr, float_compare)
let count = Js.Array.length(arr)
// find the middle value, or the lowest middle value
let middleval = ((count - 1) / 2)
let median =
if (mod(count, 2) != 0) { // odd number, middle is the median
arr[middleval]
} else { // even number, calculate avg of 2 medians
let low = arr[middleval]
let high = arr[middleval+1]
((low +. high) /. 2.0)
}
median
}
Js.log(median([4.1, 5.6, 7.2, 1.7, 9.3, 4.4, 3.2]))
Js.log(median([4.1, 7.2, 1.7, 9.3, 4.4, 3.2]))</lang>
{{out}}
<pre>
$ bsc median.res > median.bs.js
$ node median.bs.js
4.4
4.25
</pre>
=={{header|REXX}}==
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