RosettaCodeData/Task/Bin-given-limits/Perl/bin-given-limits-1.pl
2023-07-01 13:44:08 -04:00

57 lines
2.1 KiB
Perl

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