43 lines
1.8 KiB
Crystal
43 lines
1.8 KiB
Crystal
def bin (limits, seq)
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bins = Array.new limits.size+1, 0
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seq.each do |v|
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bins[limits.bsearch_index {|l, _| v < l } || -1] += 1
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end
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bins
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end
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def print_bins (limits, bins)
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limit_width = limits.values_at(0, -1).map(&.to_s.size).max
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tally_width = bins.max.to_s.size
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bins.each_with_index do |n, i|
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left = if i > 0; limits[i-1] end
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right = if i < limits.size; limits[i] end
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printf "%*s %s n %s %*s ⇒ %*s\n",
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limit_width, left, left ? "≤" : " ",
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right ? "<" : " ", limit_width, right,
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tally_width, n
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end
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end
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limits = [23, 37, 43, 53, 67, 83]
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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,
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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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puts "P. 1"
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print_bins(limits, bin(limits, data))
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puts
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limits = [14, 18, 249, 312, 389, 392, 513, 591, 634, 720]
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data = [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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puts "P. 2"
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print_bins(limits, bin(limits, data))
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