I'm developing a program in visual basic 6.0 to display magic square. I've developed the logic, but the values are not getting displayed in the magic square. Here's the code :
Private Sub Command1_Click()
Dim limit As Integer
Dim a(100, 100) As Integer
limit = InputBox("Enter the limit")
If limit Mod 2 = 0 Then ' Rows and columns must be
MsgBox "Can't be done", vbOKCancel, "Error"
Else ' set number of rows and columns to limit
mfgsquare.Rows = limit
mfgsquare.Cols = limit
j = (n + 1) / 2
i = 1
For c = 1 To n * n
mfgsquare.TextMatrix(i, j) = c
If c Mod n = 0 Then
i = i + 1
GoTo label
End If
If i = 1 Then
i = n
Else
i = i - 1
End If
If j = n Then
j = 1
Else
j = j + 1
End If
label:
Next c
End If
End Sub
Try this:
n = InputBox("Enter the limit")
If n Mod 2 = 0 Then ' Rows and columns must be
MsgBox "Can't be done"
Else ' set number of rows and columns to limit
mfgsquare.Rows = n + 1
mfgsquare.Cols = n + 1
For i = 1 To n
For j = 1 To n
mfgsquare.TextMatrix(i, j) = n * ((i + j - 1 + Int(n / 2)) Mod n) + ((i + 2 * j - 2) Mod n) + 1
Next j
Next i
End If
Related
I am trying to simulate the I/O of this website page
My Input sheet looks like this:
Now after taking the values from input sheet and arranging them in ascending order I got this in a temp worksheet :
This is what my results sheet looks like:
Now I have tried this after sorting process(didn't add code for sorting since it's not the problem):
Set rng = Union(wTime.Range("D6:D25"), wTime.Range("F6:F25"), wTime.Range("H6:H25"), wTime.Range("J6:J25"))
cnt1 = 1: cnt2 = 1: cnt3 = 1: cnt4 = 1
wTime.Range("A6:A25") = Empty 'Ticker
For i = 1 To 20
bckStroke(i) = wTemp.Range("A" & i + 1).Value
brstStroke(i) = wTemp.Range("C" & i + 1).Value
btrFly(i) = wTemp.Range("E" & i + 1).Value
frStyle(i) = wTemp.Range("G" & i + 1).Value
wTime.Range("A6:A25") = Empty
For Each cel In rng
If cel.Column = 4 And cel.Value = bckStroke(i) And cel.Value <> 0 And Trim(wTime.Cells(cel.Row, 1)) <> "Y" And cnt1 < 6 Then
wRes.Cells((cnt1 + 5 + (cnt1 - 1) * 2) - 1, 4) = wTime.Cells(cel.Row, 2) 'Athlete Name
wRes.Cells(cnt1 + 5 + (cnt1 - 1) * 2, 4) = bckStroke(i) 'Time
cnt1 = cnt1 + 1
wTime.Cells(cel.Row, 1) = "Y"
End If
If cel.Column = 6 And cel.Value = brstStroke(i) And cel.Value <> 0 And Trim(wTime.Cells(cel.Row, 1)) <> "Y" And cnt2 < 6 Then
wRes.Cells((cnt2 + 5 + (cnt2 - 1) * 2) - 1, 6) = wTime.Cells(cel.Row, 2) 'Athlete Name
wRes.Cells(cnt2 + 5 + (cnt2 - 1) * 2, 6) = brstStroke(i) 'Time
cnt2 = cnt2 + 1
wTime.Cells(cel.Row, 1) = "Y"
End If
If cel.Column = 8 And cel.Value = btrFly(i) And cel.Value <> 0 And Trim(wTime.Cells(cel.Row, 1)) <> "Y" And cnt3 < 6 Then
wRes.Cells((cnt3 + 5 + (cnt3 - 1) * 2) - 1, 8) = wTime.Cells(cel.Row, 2) 'Athlete Name
wRes.Cells(cnt3 + 5 + (cnt3 - 1) * 2, 8) = btrFly(i) 'Time
cnt3 = cnt3 + 1
wTime.Cells(cel.Row, 1) = "Y"
End If
If cel.Column = 10 And cel.Value = frStyle(i) And cel.Value <> 0 And Trim(wTime.Cells(cel.Row, 1)) <> "Y" And cnt4 < 6 Then
wRes.Cells((cnt4 + 5 + (cnt4 - 1) * 2) - 1, 10) = wTime.Cells(cel.Row, 2) 'Athlete Name
wRes.Cells(cnt4 + 5 + (cnt4 - 1) * 2, 10) = frStyle(i) 'Time
cnt4 = cnt4 + 1
wTime.Cells(cel.Row, 1) = "Y"
End If
Next cel
Next i
I just want to know the simplest logic to get the desired result after arranging them in ascending order (refer temp sheet) it should be easy but I can't seem to understand it.
Conditions that I know of for now:
Each team should have unique swimmers (i.e 4 Unique names in each team)
A swimmer can appear in other team as well if he has best time in other category as well. (E.g. Marcelo will appear in top 4 team since he has the best time in all 4 categories)
Teams with shortest time should be placed 1st in the list on result sheet. I think sorting in ascending order takes care of this it's matter of selecting right swimmer from the temp sheet list.
EDIT:
4. Relay Logic premise: Get all the combinations possible without 2 identical strings. And then sort them lowest to largest. I'd do the following: Get all the possible combinations and their sum with the following: *Combinations may still be buggy, since it may be variable to how many numbers you may have. This is just a guide to describe the process
Sub Combinations()
Dim i As Long, j As Long, k As Long, l As Long, m As Long, n As Long, o As Long, p As Long, q As Long
Dim CountComb As Long, lastrow As Long
Range("K2").Value = Now - 5
Application.ScreenUpdating = False
CountComb = 0: lastrow = 6
For i = 1 To 6: For j = 1 To 5
For k = 1 To 6: For l = 1 To 6
If Not (i = j Or i = k Or i = l Or j = k Or j = l Or k = l) Then
Range("K" & lastrow).Value = Range("A" & i).Value & "/" & _
Range("B" & j).Value & "/" & _
Range("C" & k).Value & "/" & _
Range("D" & l).Value
lastrow = lastrow + 1
CountComb = CountComb + 1
End If
Next: Next
Next: Next
Range("K1").Value = CountComb
Range("K3").Value = Now + 21
Application.ScreenUpdating = True
End Sub
Function TimeSum(Persons As String, Chr As String) As Double
Dim ArrayPersons() As String: ArrayPersons = Split(Persons, Chr)
Dim SumOfTime As Double
Dim ItemPerson As Variant
Dim NumberRoutines As Long: NumberRoutines = 2
Const SheetData = "Sheet1"
For Each ItemPerson In ArrayPersons
SumOfTime = Sheets(SheetData).Columns(NumberRoutines).Find(ItemPerson).Offset(0, -1).Value + SumOfTime
NumberRoutines = NumberRoutines + 2
Next ItemPerson
TimeSum = SumOfTime
End Function
Maybe you could define better the sub to do what you desire for, but, the last coding could guide you in the right path. In a second thought, you could get combinations in a dictionary instead.
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I'm trying to create a method converting a number to normalized scientific notation, here is the code that I'm using to calculate mantissa and exponent:
ConvNSN 1000, M, P
MsgBox M & "e" & P
Sub ConvNSN(N, M, P)
If N = 0 Then
P = 0
M = 0
Else
P = Int(Log(Abs(N)) / Log(10))
M = N / 10 ^ P
End If
End Sub
The problem I am facing is that this code gives wrong exponent value for some numbers, eg 1000, 10E+6, 10E+9, 10E+12, 10E+13, etc... Exactly for 1000 converted should be 1e3, but not 10e2. It's obvious that the same problem with numbers, whose logarithms are close to an integer value, like Log(1 - 5.55111512312578E-17) / Log(10), which result is 0, however 1 - 5.55111512312578E-17 less then 1, and result has to be negative.
How can I get rid of Double type imprecision, and get this code to work properly?
UPDATE
I assume the fastest and quite accurate method to calculate mantissa and exponent of number in normalized scientific notation may be as follows:
Sub ConvNSN(N, M, P)
Dim A
If N = 0 Then
P = 0
M = 0
Exit Sub
End If
A = Abs(N)
If A < 1 Then
P = Int(Log(A) / Log(10))
Else
P = Int(Log(A) / Log(10) * (2 + Log(.1) / Log(10)))
End If
M = N / 10 ^ P
End Sub
Or another one, based on #Bob's solution:
Sub ConvNSN(N, M, P)
If N = 0 Then
P = 0
M = 0
Else
P = Int(Log(Abs(N)) / Log(10))
M = N / 10 ^ P
End If
If Abs(M) = "10" Then
M = M / 10
P = P + 1
End If
End Sub
First one slightly faster. Both of them process exponent from -322 to 308, but return not normalized mantissa with powers of 10 less then -310. I have not tested them yet with numbers, whose logarithms are a marginally less but very close to an integer values.
UPDATE 2
I decided to attach here an extra Sub ConvEN(), allowing to represent a number in engineering notation with SI prefixes from "p" to "T":
N = .0000456789
ConvNSN N, M, P
M = Round(M, 2)
ConvEN M, P, R, S
MsgBox R & " " & S & "Units"
Sub ConvNSN(N, M, P)
Dim A
If N = 0 Then
P = 0
M = 0
Exit Sub
End If
A = Abs(N)
If A < 1 Then
P = Int(Log(A) / Log(10))
Else
P = Int(Log(A) / Log(10) * (2 + Log(.1) / Log(10)))
End If
M = N / 10 ^ P
End Sub
Sub ConvEN(M, P, R, S)
DIM Q, P3
Q = int(P / 3)
P3 = Q * 3
If Q >= -4 And Q <= 4 Then
S = Array("p", "n", ChrW(&H03BC), "m", "", "k", "M", "G", "T")(Q + 4)
Else
S = "e" & P3 & " "
End If
R = M * 10 ^ (P - P3)
End Sub
Try this:
ConvNSN 1000, M, P
MsgBox M & "E" & P
ConvNSN 0.00000000000000001234, M, P
MsgBox M & "E" & P
ConvNSN -0.00000000000000001234, M, P
MsgBox M & "E" & P
Sub ConvNSN(N, M, P)
P = 0
If N < 0 Then
S = -1
ElseIf N > 0 Then
S = 1
Else
M = 0
Exit Sub
End If
M = Abs(N)
If M >= 10 Then
While M >= 10
M = M / 10
P = P + 1
Wend
M = M * S
Exit Sub
End If
If M < 1 Then
While M < 1
M = M * 10
P = P - 1
Wend
M = M * S
Exit Sub
End If
End Sub
Based on the comments, I re-wrote this my way, ignoring the structure from the OP.
MsgBox NSN(-0.0000000000000000000123456789,4)
MsgBox NSN(1234567890000000000000000000,4)
Function NSN(Number, Accuracy)
Exponent = 0
If Number > 0 Then
Sign = 1
ElseIf Number < 0 Then
Sign = -1
Else
NSN = 0
Exit Function
End If
Number = Number * Sign
If Number >= 10 Then
While Number >= 10
Number = Number / 10
Exponent = Exponent + 1
Wend
ElseIf Number < 1 Then
While Number < 1
Number = Number * 10
Exponent = Exponent - 1
Wend
End If
Number = Round(Number, Accuracy)
If Number = "10" Then
Number = 1
Exponent = Exponent + 1
End If
Number = Number * Sign
If Exponent = 0 Then
NSN = Number
Else
NSN = Number & "E" & Exponent
End If
End Function
Using strings rather than maths can help. Add your own error checking.
Num = "1000000.0005"
NumOfDigits = 4
Mag = Instr(Num, ".")
Num = Replace(Num, ".", "")
MSD = Left(Num, 1)
Rest = Mid(num, 2, NumOfDigits)
msgbox MSD & "." & Rest & " x 10^" & (Mag -2)
This question has been asked before, but I can't find an answer that is easily applicable to Excel VBA.
Basically I want to do exactly what this poster has asked, but in VBA. I want to create an array, n x 2^n, where each line represents a different permutation of n variables which can be either 0 or 1.
I've played around with this for ages, and it's easy enough to do for a set n with loads of loops, but for a variable n I can't find anything that works.
Any code or just suggestions of ways of going about this would be much appreciated!
This will list the value in column A
Sub EasyAsCounting()
Dim N As Long, M As Long, K As Long
N = Application.InputBox(Prompt:="Enter N", Type:=1)
M = 2 ^ N - 1
For K = 0 To M
Cells(K + 1, 1) = "'" & Application.WorksheetFunction.Dec2Bin(K, N)
Next K
End Sub
EDIT#1
This stores the array in VBA only:
Sub EasyAsCounting()
Dim N As Long, M As Long, K As Long, ary, s As String
Dim J As Long
N = Application.InputBox(Prompt:="Enter N", Type:=1)
M = 2 ^ N - 1
ReDim ary(1 To M + 1, 1 To N)
For K = 0 To M
s = Application.WorksheetFunction.Dec2Bin(K, N)
For J = 1 To N
ary(K + 1, J) = Mid(s, J, 1)
Next J
Next K
'
'display the array
'
msg = ""
For K = 1 To M + 1
For J = 1 To N
msg = msg & " " & ary(K, J)
Next J
msg = msg & vbCrLf
Next K
MsgBox msg
End Sub
Here's one if you're not in Excel and don't have access to the functions. Or if you have a number greater than 511.
Sub MakePerms()
Dim i As Long, j As Long
Dim n As Long
Dim aPerms() As Byte
Dim lCnt As Long
Dim sOutput As String
Const lVar As Long = 4
ReDim aPerms(1 To 2 ^ lVar, 1 To lVar)
For i = 0 To UBound(aPerms, 1) - 1
n = i
lCnt = lVar
aPerms(i + 1, lCnt) = CByte(n Mod 2)
n = n \ 2
Do While n > 0
lCnt = lCnt - 1
aPerms(i + 1, lCnt) = CByte(n Mod 2)
n = n \ 2
Loop
Next i
For i = LBound(aPerms, 1) To UBound(aPerms, 1)
sOutput = vbNullString
For j = LBound(aPerms, 2) To UBound(aPerms, 2)
sOutput = sOutput & Space(1) & aPerms(i, j)
Next j
Debug.Print sOutput
Next i
End Sub
How to sum 2 numbers digit by digit with pseudo code?
Note: You don't know the length of the numbers - if it has tens, hundreds, thousands...
Units should be add to units, tens to tens, hundreds to hundreds.....
If there is a value >= 10 in adding the units you need to put the value of that ten with "the tens"....
I tried
Start
Do
Add digit(x) in A to Sum(x)
Add digit(x) in B to Sum(x)
If Sum(x) > 9, then (?????)
digit(x) = digit(x+1)
while digit(x) in A and digit(x) in B is > 0
How to show the result?
I am lost with that.....
Please help!
Try this,
n = minDigit(a, b) where a and b are the numbers.
let sum be a number.
m = maxDigit(a,b)
allocate maxDigit(a,b) + 1 memory for sum
carry = 0;
for (i = 1 to n)
temp = a[i] + b[i] + carry
// reset carry
carry = 0
if (temp > 10)
carry = 1
temp = temp - 10;
sum[i] = temp
// one last step to get the leftover carry
if (digits(a) == digits(b)
sum[n + 1] = carry
return
if (digits(a) > digits(b)
toCopy = a
else
toCopy = b
for (i = n to m)
temp = toCopy[i] + carry
// reset carry
carry = 0
if (temp > 10)
carry = 1
temp = temp - 10;
sum[i] = temp
Let me know if it helps
A and B are the integers you want to sum.
Note that the while loop ends when all the three integers are equal to zero.
carry = 0
sum = 0
d = 1
while (A > 0 or B > 0 or carry > 0)
tmp = carry + A mod 10 + B mod 10
sum = sum + (tmp mod 10) * d
carry = tmp / 10
d = d * 10
A = A / 10
B = B / 10
I have a list of 100 items. I'd like to randomly pair these items with each other. These pairs must be unique, so there are 4950 possibilities (100 choose 2) total.
Of all 4950 pairs, I'd like to have 1000 pairs randomly selected. But they key is, I'd like each item (of the 100 items) to overall appear the same amount of times (here, 20 times).
I tried to implement this with code a couple of times. And it worked fine when I tried with a lower amount of pairs chosen, but each time I try with the full 1000 pairs, I get stuck in a loop.
Does anyone have an idea for an approach? And what if I change the number of pairs I wish to select (e.g., 1500 rather than 1000 random pairs)?
My attempt (written in VBA):
Dim City1(4951) As Integer
Dim City2(4951) As Integer
Dim CityCounter(101) As Integer
Dim PairCounter(4951) As Integer
Dim i As Integer
Dim j As Integer
Dim k As Integer
i = 1
While i < 101
CityCounter(i) = 0
i = i + 1
Wend
i = 1
While i < 4951
PairCounter(i) = 0
i = i + 1
Wend
i = 1
j = 1
While j < 101
k = j + 1
While k < 101
City1(i) = j
City2(i) = k
k = k + 1
i = i + 1
Wend
j = j + 1
Wend
Dim temp As Integer
i = 1
While i < 1001
temp = Random(1,4950)
While ((PairCounter(temp) = 1) Or (CityCounter( (City1(temp)) ) = 20) Or (CityCounter( (City2(temp)) ) = 20))
temp = Random(1,4950)
Wend
PairCounter(temp) = 1
CityCounter( (City1(temp)) ) = (CityCounter( (City1(temp)) ) + 1)
CityCounter( (City2(temp)) ) = (CityCounter( (City2(temp)) ) + 1)
i = i + 1
Wend
Take a list, scramble it, and mark every two elements off as a pair. Add these pairs to a list of pairs. Ensure that list of pairs is sorted.
Scramble the list of pairs, and add each pair to a "staged" pair list. Check if it's in the list of pairs. If it's in the list of pairs, scramble and start over. If you get the entire list without any duplicates, add the staged pair list to the pair list and start this paragraph over.
Since this involves a nondeterministic step at the end I'm not sure how slow it will be, but it should work.
This is old thread, but I was looking for something similar, and finaly did it myself.
The algorithm is not 100% random (after being a bit "tired" with unsuccessfull random trials starts systematic screening of the table :) - anyway for me - "random enough") but works reasonably fast, and returns required table (unfortunalety not always, but...) usually every second or third use (look in A1 if there is your reqired number of pairs for each item).
Here is VBA code to be run in Excel environment.
Output is directed to current sheet starting from A1 cell.
Option Explicit
Public generalmax%, oldgeneralmax%, generalmin%, alloweddiff%, i&
Public outtable() As Integer
Const maxpair = 100, upperlimit = 20
Sub generate_random_unique_pairs()
'by Kaper 2015.02 for stackoverflow.com/questions/14884975
Dim x%, y%, counter%
Randomize
ReDim outtable(1 To maxpair + 1, 1 To maxpair + 1)
Range("A1").Resize(maxpair + 1, maxpair + 1).ClearContents
alloweddiff = 1
Do
i = i + 1
If counter > (0.5 * upperlimit) Then 'try some systematic approach
For x = 1 To maxpair - 1 ' top-left or:' To 1 Step -1 ' bottom-right
For y = x + 1 To maxpair
Call test_and_fill(x, y, counter)
Next y
Next x
If counter > 0 Then
alloweddiff = alloweddiff + 1
counter = 0
End If
End If
' mostly used - random mode
x = WorksheetFunction.RandBetween(1, maxpair - 1)
y = WorksheetFunction.RandBetween(x + 1, maxpair)
counter = counter + 1
Call test_and_fill(x, y, counter)
If counter = 0 Then alloweddiff = WorksheetFunction.Max(alloweddiff, 1)
If i > (2.5 * upperlimit) Then Exit Do
Loop Until generalmin = upperlimit
Range("A1").Resize(maxpair + 1, maxpair + 1).Value = outtable
Range("A1").Value = generalmin
Application.StatusBar = ""
End Sub
Sub test_and_fill(x%, y%, ByRef counter%)
Dim temprowx%, temprowy%, tempcolx%, tempcoly%, tempmax%, j%
tempcolx = outtable(1, x + 1)
tempcoly = outtable(1, y + 1)
temprowx = outtable(x + 1, 1)
temprowy = outtable(y + 1, 1)
tempmax = 1+ WorksheetFunction.Max(tempcolx, tempcoly, temprowx, temprowy)
If tempmax <= (generalmin + alloweddiff) And tempmax <= upperlimit And outtable(y + 1, x + 1) = 0 Then
counter = 0
outtable(y + 1, x + 1) = 1
outtable(x + 1, y + 1) = 1
outtable(x + 1, 1) = 1 + outtable(x + 1, 1)
outtable(y + 1, 1) = 1 + outtable(y + 1, 1)
outtable(1, x + 1) = 1 + outtable(1, x + 1)
outtable(1, y + 1) = 1 + outtable(1, y + 1)
generalmax = WorksheetFunction.Max(generalmax, outtable(x + 1, 1), outtable(y + 1, 1), outtable(1, x + 1), outtable(1, y + 1))
generalmin = outtable(x + 1, 1)
For j = 1 To maxpair
If outtable(j + 1, 1) < generalmin Then generalmin = outtable(j + 1, 1)
If outtable(1, j + 1) < generalmin Then generalmin = outtable(1, j + 1)
Next j
If generalmax > oldgeneralmax Then
oldgeneralmax = generalmax
Application.StatusBar = "Working on pairs " & generalmax & "Total progress (non-linear): " & Format(1# * generalmax / upperlimit, "0%")
End If
alloweddiff = alloweddiff - 1
i = 0
End If
End Sub
Have an array appeared[] which keeps track of how many times each item already appeared in answer. Let's say each element has to appear k times. Iterate over the array, and while current element has its appeared value less than k, choose a random pair for it from that element who also have appeared less than k times. Add that pair to answer and increase appearance count for both.
create a 2-dimensional 100*100 matrix of booleans, all False
of these 10K booleans, set 1K of them to true, with the following constraints:
the diagonal should stay empty
no row or column should have more than 20 true values
at the end, every row and column should have 20 True values.
Now, there is the X=Y diagonal symmetry. Just add the following constraints:
the triangle at one side of the diagonal should stay empty
in the above constraints, the restrictions for rows&columns should be combined/added