44 lines
1.5 KiB
Groovy
44 lines
1.5 KiB
Groovy
class Fivenum {
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static double median(double[] x, int start, int endInclusive) {
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int size = endInclusive - start + 1
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if (size <= 0) {
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throw new IllegalArgumentException("Array slice cannot be empty")
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}
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int m = start + (int) (size / 2)
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return (size % 2 == 1) ? x[m] : (x[m - 1] + x[m]) / 2.0
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}
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static double[] fivenum(double[] x) {
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for (Double d : x) {
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if (d.isNaN()) {
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throw new IllegalArgumentException("Unable to deal with arrays containing NaN")
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}
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}
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double[] result = new double[5]
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Arrays.sort(x)
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result[0] = x[0]
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result[2] = median(x, 0, x.length - 1)
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result[4] = x[x.length - 1]
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int m = (int) (x.length / 2)
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int lowerEnd = (x.length % 2 == 1) ? m : m - 1
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result[1] = median(x, 0, lowerEnd)
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result[3] = median(x, m, x.length - 1)
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return result
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}
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static void main(String[] args) {
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double[][] xl = [
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[15.0, 6.0, 42.0, 41.0, 7.0, 36.0, 49.0, 40.0, 39.0, 47.0, 43.0],
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[36.0, 40.0, 7.0, 39.0, 41.0, 15.0],
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[
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0.14082834, 0.09748790, 1.73131507, 0.87636009, -1.95059594, 0.73438555,
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-0.03035726, 1.46675970, -0.74621349, -0.72588772, 0.63905160, 0.61501527,
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-0.98983780, -1.00447874, -0.62759469, 0.66206163, 1.04312009, -0.10305385,
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0.75775634, 0.32566578
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]
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]
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for (double[] x : xl) {
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println("${fivenum(x)}")
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}
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}
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}
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