Rosetta Code

[smorgasbord]

thanks @kon
done

[smorgasbord]

Zero to the zero power
Challenge: find wrong indentation in this one.

[joedf]

Looooooool

[jNizM]

Reminder for some bored* guys
- Tasks not implemented in AutoHotkey
- AutoHotkey examples needing attention

[nnnik]

Reminder for some boring guys

I'm pretty sure you mean bored.

[Blackholyman]

Hehe

I just did the Standard deviation

Spoiler

Code: Select all

Data := [2,4,4,4,5,5,7,9]
 
for k, v in Data {
    FileAppend, % "#" a_index " value = " v " stddev = " stddev(v) "`n", * ; send to stdout
}
return

stddev(x) {
	static n, sum, sum2
    n++
	sum += x
	sum2 += x*x
 
	return sqrt((sum2/n) - (((sum*sum)/n)/n))
}

[Elesar]

Hehe

I just did the Standard deviation
...

That is almost exactly what my solution was, I just got distracted at work and forgot to update the page :/

[jNizM]

Changed CRC-32

ahk thread

[kon]

Stern-Brocot sequence

Edit: Added the original version here. See below for updated version.

Code: Select all

Found := FindOneToX(100), FoundList := ""
Loop, 10
    FoundList .= "First " A_Index " found at " Found[A_Index] "`n"
MsgBox, 64, Stern-Brocot Sequence
    , % "First 15: " FirstX(15) "`n"
    .    FoundList
    .   "First 100 found at " Found[100] "`n"
    .   "GCDs of all two consecutive members are " (GCDsUpToXAreOne(1000) ? "" : "not ") "one."
return
 
class SternBrocot
{
    __New()
    {
        this[1] := 1
        this[2] := 1
        this.Consider := 2
    }
 
    InsertPair()
    {
        n := this.Consider
        this.Push(this[n] + this[n - 1], this[n])
        this.Consider++
    }
}
 
; Show the first fifteen members of the sequence. (This should be: 1, 1, 2, 1, 3, 2, 3, 1, 4, 3,
; 5, 2, 5, 3, 4)
FirstX(x)
{
    SB := new SternBrocot()
    while SB.MaxIndex() < x
        SB.InsertPair()
    Loop, % x
        Out .= SB[A_Index] ", "
    return RTrim(Out, " ,")
}
 
; Show the (1-based) index of where the numbers 1-to-10 first appears in the sequence.
; Show the (1-based) index of where the number 100 first appears in the sequence.
FindOneToX(x)
{
    SB := new SternBrocot(), xRequired := x, Found := []
    while xRequired > 0                     ; While the count of numbers yet to be found is > 0.
    {
        Loop, 2                      ; Consider the second last member and then the last member.
        {
            n := SB[i := SB.MaxIndex() - 2 + A_Index]
            ; If number (n) has not been found yet, and it is less than the maximum number to
            ; find (x), record the index (i) and decrement the count of numbers yet to be found.
            if (Found[n] = "" && n <= x)
                Found[n] := i, xRequired--
        }
        SB.InsertPair()                      ; Insert the two members that will be checked next.
    }
    return Found
}
 
; Check that the greatest common divisor of all the two consecutive members of the series up to
; the 1000th member, is always one.
GCDsUpToXAreOne(x)
{
    SB := new SternBrocot()
    while SB.MaxIndex() < x
        SB.InsertPair()
    Loop, % x - 1
        if GCD(SB[A_Index], SB[A_Index + 1]) > 1
            return 0
    return 1
}
 
GCD(a, b) {
    while b
        b := Mod(a | 0x0, a := b)
    return a
}

[joedf]

@kon nice implementation 8)

[kon]

Thanks joe

[nnnik]

I think that is among the things where AHK can really shine:

Code: Select all

Str := "For the Sequence with Base[ " . SternBrocot[1] . ", " . SternBrocot[2] . " ]:`n" 
Str .= "First ten Numbers in the Sequence:`n[ "
Loop 9
	Str .= SternBrocot[A_Index] . ", "
Str .= SternBrocot[10] . "]`n`n"
Str .= "100th Number in the Sequence:`n" . SternBrocot[100] . "`n`n"
If (firstGCD := SternBrocot.gcdBelow(num := 1000))
	Str .= "The first consecutive Entries whose Greatest Common Divisor is not 1 starts at:`n" . firstGCD
Else
	Str .= "There are no consecutive Entries in the Sequence whose GCD is not 1 in sequence below Entry:`n" . num
Msgbox % Str

class SternBrocot
{
	static Init := SternBrocot.__New(1,1)
	
	__New(num1,num2)
	{
		This.base := {__Get:SternBrocot.Get}
		This.Remove(SternBrocot.MinIndex(),SternBrocot.MaxIndex())
		This.Push(num1)
		This.Push(num2)
	}
	Get(Num)
	{
		c := Ceil(This.MaxIndex()/2)
		a := Ceil(Num/2-c)
		Loop % a
			This.Push(This[c++]+b:=This[c],b)
		return This[Num]
	}
	gcdBelow(Num)
	{
		If (This.MaxIndex()<Num+1)
			This[Num+1]
		while ((A_Index<=Num)&&(gcd(This[A_Index],This[A_Index+1])=1))
			a:=A_Index
		return (a=Num?0:a+1)
	}
}
gcd(a,b)
{
	while b
        b := Mod(a |0x0, a := b)
    return a?1:a
}

[kon]

I think that is among the things where AHK can really shine:

I agree. I like the changes you made to take advantage of __Get().

I modified it to meet the task requirements. I also added some unit tests.

I also changed some things that I think were incorrect (Please correct me if I'm wrong.)
I changed the gcd function.
I modified gcdBelow(). - My understanding of the task is that for gcdBelow(1000), the last pair that should be checked is 999 and 1000.

Code: Select all

; Unit Tests====================================================================================
UT := []
UT[1] := gcd(7, 14) = 7 ? "Pass" : "Fail"
UT[2] := gcd(7, 15) = 1 ? "Pass" : "Fail"
 
UT[3] := SternBrocot[11] = 5 ? "Pass" : "Fail"
UT[4] := SternBrocot[1000] = 11 ? "Pass" : "Fail"
 
UT[5] := SternBrocot.gcdBelow(1000) = 0 ? "Pass" : "Fail"
 
; 999 and 1000 should be the last pair checked by gcdBelow
; (Not very important, but I *think* this is how the task is written.)
UT[6] := SternBrocot.HasKey(1001) = 0 ? "Pass" : "Fail"
 
; Enter an incorrect number at SternBrocot[1001] to check if gcdBelow() works.
SternBrocot[1001]
SternBrocot[1001] := 22 ; gcd(11, 22) = 11
UT[7] := SternBrocot.gcdBelow(1001) = 1000 ? "Pass" : "Fail"
SternBrocot.__New(1, 1)
 
UT[8] := SternBrocot.Find(1, 1) = "First 1 found at 1.`n" ? "Pass" : "Fail"
UT[9] := SternBrocot.Find(2, 3) = "First 2 found at 3.`nFirst 3 found at 5.`n" ? "Pass" : "Fail"
UT[10] := SternBrocot.Find(3, 0)  = "First 3 found at 5.`n" ? "Pass" : "Fail"
;===============================================================================================
UTList := ""
for i, Val in UT
    UTlist .=  "Unit test " i ": " Val "`n"
MsgBox, 64, Unit Tests, % UTList
;===============================================================================================
 
Title := "Stern-Brocot sequence with base[ " . SternBrocot[1] . ", " . SternBrocot[2] " ]"
Str := "First fifteen numbers in the sequence:`n[ "
Loop 14
	Str .= SternBrocot[A_Index] . ", "
Str .= SternBrocot[15] . "]`n`n"
Str .= SternBrocot.Find(1, 10)
Str .= SternBrocot.Find(100, 0) "`n"
If (firstGCD := SternBrocot.gcdBelow(num := 1000))
	Str .= "The first consecutive entries whose greatest common divisor is not 1 starts at:`n" . firstGCD
Else
	Str .= "GCDs of all consecutive entries in the sequence are 1. Checked up to entry:`n" num
Msgbox, 64, % Title, % Str
return
 
class SternBrocot
{
	static Init := SternBrocot.__New(1,1)
 
	__New(num1,num2)
	{
		This.base := {__Get:SternBrocot.Get}
		This.Remove(SternBrocot.MinIndex(),SternBrocot.MaxIndex())
		This.Push(num1)
		This.Push(num2)
	}
	Get(Num)
	{
		c := Ceil(This.MaxIndex()/2)
		a := Ceil(Num/2-c)
		Loop % a
			This.Push(This[c++]+b:=This[c],b)
		return This[Num]
	}
	gcdBelow(Num)
	{
		This[Num]
		while ((A_Index<Num)&&(gcd(This[A_Index],This[A_Index+1])=1))
			a:=A_Index
		return a=Num-1?0:a+1
	}
    Find(From, To)
    {
        Loop
        {
            while This[n := A_Index] != From
                continue
            s .= "First " From " found at " n ".`n"
        } until From++ >= To
        return s
    }
}
gcd(a,b)
{
	while b
        b := Mod(a | 0x0, a := b)
    return a
}

I think I will update the Rosetta Code page (leaving out the unit tests) but I'll wait for a bit to see if there are any thoughts on this version.

Edits: Moved Find() inside the class. & Undeleted calling This[Num] at the start of gcdBelow().

[imustbeamoron]

i made this awhile back.. never did post it.. its for the honeycomb task, feel free to improve or submit it.. I know this can be shortend, but was going for readability.

Code: Select all

CoordMode, mouse, client
t := new honeyComb()
return

GuiClose:
esc::
ExitApp

class Honeycomb{
	__new(hxn_Width=80, hxn_Height=60, hxn_Columns=5, hxn_Rows=4){
		this.char_init()
		this.hxn_init(hxn_Width, hxn_Height, hxn_Columns, hxn_Rows)
		
		this.wndw_init()
		
		this.hFont := this.createFont(round(hxn_Height*.6), round(hxn_Width*.35))
		this.selectObject(this.wndw.hDC, this.hFont)											;set the font color to red
		DllCall("SetTextColor", "Ptr", this.wndw.hDC, "UInt", 0x0000FF)
		
		for key, val in this.hxn.array															;draw all hexagons
			this.hxn_draw(key)
		DllCall("SetTextColor", "Ptr", this.wndw.hDC, "UInt", 0x000000)							;set the font color to black
	}
	
	char_init(){																				;sets up the char array - used to assign each hxn a random character (letter)
		this.char 			:= {}
		this.char.selected	:=
		this.char.array		:= []
		loop 26
			this.char.array.push(chr(a_index + 64))
	}
	
	hxn_init(hxn_Width, hxn_Height, hxn_Columns, hxn_Rows){										;sets up the array of hexagons
		this.hxn 			:= {}				,this.hxn.array 		:= {}
		this.hxn.width 		:= hxn_Width		,this.hxn.height		:= hxn_Height
		this.hxn.rowCount	:= hxn_Rows			,this.hxn.colCount		:= hxn_Columns
		w					:= this.hxn.width	,h						:= this.hxn.height
		oX					:= 10				,oY						:= 10
		pts 				:= {}				,orig_Y					:= 10
		pts.x				:= []				,pts.y					:= []
		pts.x.push(round(w * .25))				,pts.y.push(0)
		pts.x.push(round(w * .75))				,pts.y.push(0)
		pts.x.push(w)							,pts.y.push(round(h * .5))
		pts.x.push(round(w *.75))				,pts.y.push(h)
		pts.x.push(round(w *.25))				,pts.y.push(h)
		pts.x.push(0)							,pts.y.push(round(h *.5))
		FuncObj := ObjBindMethod(this, "hkey_handler")
		loop % this.hxn.colCount
		{
			if !(a_index & 1)
				oY += h/2
			loop % this.hxn.rowCount
			{	
				random, charIndex, 1, % this.char.array.maxIndex()								;get rnd char for the new hxn
				char		:= this.char.array[charIndex]
				this.hxn.array[char] 			:= {}											;create new hxn object, add it tohxn.array, w/ the key being its rnd char
				this.hxn.array[char].char 		:= char
				this.hxn.array[char].isFresh 	:= 1
				pos 							:= 0
				varSetCapacity(hxnPoints, 48, 0)												;build the array of pts structures to be used in the createpolygonrgn call
				loop % pts.x.maxIndex()
				{
					numPut(pts.x[a_index] + oX,	hxnPoints, pos + 0, "int")
					numPut(pts.y[a_Index] + oY,	hxnPoints, pos + 4, "int")
					pos += 8
				}
				this.hxn.array[char].rgn		:= DllCall("CreatePolygonRgn", "Ptr", &hxnPoints, "Int", 6, "Int", 1)
				Hotkey, % char,% FuncObj
				this.char.array.Remove(charIndex)
				oY += h
			}
			oY := orig_Y, oX += w * .75
		}
		FuncObj := ObjBindMethod(this, "mouse_handler")
		Hotkey, ~LButton, % FuncObj
	}
	
	hxn_draw(key,fillcolor=0x00FFFF){
		brush := this.createBrush(fillColor)													;fill the hexagon
		this.selectObject(this.wndw.hDC, brush)
		DllCall("FillRgn", "Ptr", this.wndw.hDC, "Ptr", this.hxn.array[key].rgn, "Ptr", brush)
		this.deleteObject(brush)
		
		brush := this.createBrush(0x000000)														;frame the hexagon
		this.selectObject(this.wndw.hDC, brush)
		DllCall("FrameRgn", "Ptr", this.wndw.hDC, "Ptr", this.hxn.array[key].rgn, "Ptr", brush, "Int", 1, "Int", 1)
		this.deleteObject(brush)
		
		DllCall("SetBkColor", "Ptr", this.wndw.hDC, "UInt", fillColor)							;draw the hexagons char
		this.hxn_getCharPos(key, cx, cy)
		DllCall("TextOut", "Ptr", this.wndw.hDC, "Int", cX, "Int", cY, "Str", this.hxn.array[key].char, "Int", 1)
	}
	
	hxn_getCharPos(key, ByRef x, ByRef y){
		;get the char width
		VarSetCapacity(tSize, 8, 0)
		DllCall("GetTextExtentPoint32", "Ptr", this.wndw.hDC, "Str", key, "Int", StrLen(key), "Ptr", &tSize)
		tWidth := NumGet(tSize, 0, "Int")
		tHeight := NumGet(tSize, 4, "Int")
		
		;get the bounding box of the hxn rgn
		VarSetCapacity(rect, 16, 0)
		DllCall("GetRgnBox", "Ptr", this.hxn.array[key].rgn, "Ptr", &rect)
		
		;calc the position of the char within the hxn
		x := (this.hxn.width / 2) - (tWidth / 2) + NumGet(rect, 0, "int")
		y := (this.hxn.height / 2) - (tHeight / 2) + NumGet(rect, 4, "int")
	}
	
	hxn_getRgn(x,y){
		for key, value in this.hxn.array
		{
			if (DllCall("PtInRegion", "Ptr", this.hxn.array[key].rgn, "Int", x, "Int", y)) && this.hxn.array[key].isFresh
			{
				this.hxn_draw(key, 0xFF00FF)
				Hotkey, %key%,, off
				this.hxn.array[key].isFresh := 0
				this.char.selected .= key ","															;if mouse is used to select a hgn, add it to the list 
				break
			}
		}
	}
	
	hkey_handler(){
		this.hxn_draw(A_ThisHotkey, 0xFF00FF)															;fill the hexagon with the 2nd color.. 
		Hotkey, % A_ThisHotkey, off																		;remove this hotkey now that we've already 'used' this hexagon
		this.hxn.array[A_ThisHotkey].isFresh := 0
		this.char.selected .= A_ThisHotkey ","															;if key is used to select hgn, add it to the list
		this.game_getStatus()
	}
	
	mouse_handler(){
		MouseGetPos, mx, my																				;gets the current mouse postion
		this.hxn_getRgn(mx,my)																			;checks if mouse click was inside a hex rgn/if so, draw it
		this.game_getStatus()																			;checks if game is over
	}
	
	game_getStatus(){																					;checks if game is over
		for key, val in this.hxn.array																	;if game is over, display list of selected chars
			if this.hxn.array[key].isfresh																; and play again dlg box.
				return
		selected := this.char.selected
		selected := SubStr(selected,1, StrLen(selected)-1)
		MsgBox, 0x4, Game Over, % "Order of selected hexagons: " selected "`nPlay again?"
		IfMsgBox No
			ExitApp
		Reload
	}
	
	wndw_init(){																						;sets up and displays the window
		this.wndw 			:= {}
		this.wndw.width		:= round(this.hxn.width * (this.hxn.colCount - 1)) + 20
		this.wndw.height	:= round(this.hxn.height * (this.hxn.rowCount + .5)) + 20
		gui, show, % "w" this.wndw.width " h" this.wndw.height, Honeycombs
		this.wndw.hWnd 		:= WinExist("A")
		this.wndw.hDC		:= DllCall("GetDC", "Ptr", this.wndw.hWnd)
	}
	
	createBrush(color){
		return DllCall("CreateSolidBrush", "UInt", color)
	}
	
	createFont(height,width,weight=800){
		return DllCall("CreateFont"
						,"Int",		height
						,"Int",		width
						,"Int",		0
						,"Int",		0
						,"Int",		weight
						,"UInt",	0
						,"UInt",	0
						,"UInt",	0
						,"UInt",	0
						,"UInt",	0
						,"UInt",	0
						,"UInt",	0
						,"UInt",	0
						,"Str",		0)
	}
	
	selectObject(dc, obj){																		;internal method
		return DllCall("SelectObject", "Ptr", dc, "Ptr", obj)
	}
	
	deleteObject(obj){																			;used for gdi cleanup
		return DllCall("DeleteObject", "Ptr", obj)
	}
	
	__Delete(){
		DllCall("ReleaseDC", "Ptr", this.wndw.hWnd, "Ptr", this.wndw.hDC)						;release the window DC
		this.deleteObject(this.hFont)															;delete the font
		for key, val in this.hxn.array															;delete all of the hxn regions
			this.deleteObject(this.hxn.array[key].rgn)
	}
}

[kon]

Wow. Impressive. Thanks for posting

[joedf]

Very nice imustbeamoron!