Price list behind API: Difference between revisions
Added FreeBASIC
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From 95476.0 ... 104515.0 with 4490 items.
</pre>
=={{header|FreeBASIC}}==
{{trans|Python}}
<syntaxhighlight lang="vbnet">Randomize Timer
' Sample price generation
Dim Shared As Integer price_list_size
price_list_size = Int(Rnd * 2000) + 99000
Dim Shared As Integer price_list(price_list_size)
For i As Integer = 0 To price_list_size - 1
price_list(i) = Int(Rnd * 100000)
Next i
Dim Shared As Integer delta_price
delta_price = 1 ' Minimum difference between any two different prices
' API
Function get_prange_count(Byval startp As Integer, Byval endp As Integer) As Integer
Dim count As Integer = 0
For i As Integer = 0 To price_list_size - 1
If price_list(i) >= startp And price_list(i) <= endp Then count += 1
Next i
Return count
End Function
Function get_max_price() As Integer
Dim max_price As Integer = price_list(0)
For i As Integer = 1 To price_list_size - 1
If price_list(i) > max_price Then max_price = price_list(i)
Next i
Return max_price
End Function
' Solution
Sub get_5k(Byval mn As Integer, Byval mx As Integer, Byval num As Integer, Byref ret_mx As Integer, Byref ret_count As Integer)
Dim As Integer count = get_prange_count(mn, mx)
Dim As Integer delta_mx = (mx - mn) / 2
While count <> num And delta_mx >= delta_price / 2
If count > num Then
mx -= delta_mx
Else
mx += delta_mx
End If
mx = mx \ 1 ' Floor
count = get_prange_count(mn, mx)
delta_mx /= 2
Wend
ret_mx = mx
ret_count = count
End Sub
Sub get_all_5k(Byval mn As Integer, Byval mx As Integer, Byval num As Integer, result() As Integer)
Dim As Integer partmax, partcount
get_5k(mn, mx, num, partmax, partcount)
Redim As Integer result(2)
result(0) = mn
result(1) = partmax
result(2) = partcount
While partmax < mx
Dim As Integer partmin = partmax + delta_price
get_5k(partmin, mx, num, partmax, partcount)
Redim Preserve result(0 To Ubound(result, 1) + 3) As Integer
result(Ubound(result, 1) - 2) = partmin
result(Ubound(result, 1) - 1) = partmax
result(Ubound(result, 1)) = partcount
Wend
End Sub
Print "Using"; price_list_size; " random prices from 0 to"; get_max_price()
Dim As Integer result()
get_all_5k(0, get_max_price(), 5000, result())
Print "Splits into"; Ubound(result, 1) \ 3; " bins of approx 5000 elements"
For i As Integer = 0 To Ubound(result, 1) Step 3
Print Using " From ######.# ... ######.# with #### items."; result(i); result(i + 1); result(i + 2)
Next i
Dim As Integer total_count = 0
For i As Integer = 2 To Ubound(result, 1) Step 3
total_count += result(i)
Next i
If price_list_size <> total_count Then Print !"\nWhoops! Some items missing:"
Sleep</syntaxhighlight>
{{out}}
<pre>Using 99358 random prices from 0 to 99999
Splits into 19 bins of approx 5000 elements
From 0.0 ... 5043.0 with 5000 items.
From 5044.0 ... 10221.0 with 5000 items.
From 10222.0 ... 15122.0 with 5000 items.
From 15123.0 ... 20206.0 with 4999 items.
From 20207.0 ... 25232.0 with 5000 items.
From 25233.0 ... 30346.0 with 5002 items.
From 30347.0 ... 35429.0 with 4999 items.
From 35430.0 ... 40449.0 with 5001 items.
From 40450.0 ... 45403.0 with 4998 items.
From 45404.0 ... 50391.0 with 5000 items.
From 50392.0 ... 55370.0 with 5000 items.
From 55371.0 ... 60344.0 with 5000 items.
From 60345.0 ... 65438.0 with 5001 items.
From 65439.0 ... 70523.0 with 5000 items.
From 70524.0 ... 75552.0 with 5000 items.
From 75553.0 ... 80640.0 with 5000 items.
From 80641.0 ... 85626.0 with 5000 items.
From 85627.0 ... 90655.0 with 5001 items.
From 90656.0 ... 95624.0 with 5000 items.
From 95625.0 ... 104372.0 with 4357 items.</pre>
=={{header|Go}}==
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