57 lines
2.1 KiB
Perl
57 lines
2.1 KiB
Perl
use strict;
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use warnings; no warnings 'uninitialized';
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use feature 'say';
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use experimental 'signatures';
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use constant Inf => 1e10;
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my @tests = (
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{
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limits => [23, 37, 43, 53, 67, 83],
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data => [
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95,21,94,12,99,4,70,75,83,93,52,80,57, 5,53,86,65,17,92,83,71,61,54,58,47,
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16, 8, 9,32,84,7,87,46,19,30,37,96, 6,98,40,79,97,45,64,60,29,49,36,43,55
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]
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},
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{
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limits => [14, 18, 249, 312, 389, 392, 513, 591, 634, 720],
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data => [
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445,814,519,697,700,130,255,889,481,122,932, 77,323,525,570,219,367,523,442,933,
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416,589,930,373,202,253,775, 47,731,685,293,126,133,450,545,100,741,583,763,306,
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655,267,248,477,549,238, 62,678, 98,534,622,907,406,714,184,391,913, 42,560,247,
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346,860, 56,138,546, 38,985,948, 58,213,799,319,390,634,458,945,733,507,916,123,
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345,110,720,917,313,845,426, 9,457,628,410,723,354,895,881,953,677,137,397, 97,
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854,740, 83,216,421, 94,517,479,292,963,376,981,480, 39,257,272,157, 5,316,395,
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787,942,456,242,759,898,576, 67,298,425,894,435,831,241,989,614,987,770,384,692,
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698,765,331,487,251,600,879,342,982,527,736,795,585, 40, 54,901,408,359,577,237,
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605,847,353,968,832,205,838,427,876,959,686,646,835,127,621,892,443,198,988,791,
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466, 23,707,467, 33,670,921,180,991,396,160,436,717,918, 8,374,101,684,727,749
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]
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}
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);
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sub bisect_right ($x, $low, $high, @array) {
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my ($middle);
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while ($low < $high) {
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$middle = ($low + $high) / 2;
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$x < $array[$middle] ? $high = $middle : ($low = $middle + 1)
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}
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$low-1
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}
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sub bin_it ($limits, $data) {
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my @bins;
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++$bins[ bisect_right($_, 0, @$limits-1, @$limits) ] for @$data;
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@bins
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}
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sub bin_format ($limits, @bins) {
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my @lim = @$limits;
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my(@formatted);
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push @formatted, sprintf "[%3d, %3d) => %3d\n", $lim[$_], ($lim[$_+1] == Inf ? 'Inf' : $lim[$_+1]), $bins[$_] for 0..@lim-2;
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@formatted
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}
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for (0..$#tests) {
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my @limits = (0, @{$tests[$_]{limits}}, Inf);
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say bin_format \@limits, bin_it(\@limits,\@{$tests[$_]{data}});
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}
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