June 2018 Update
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Ingy döt Net
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5278 changed files with 84726 additions and 14379 deletions
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!RosettaCode: Ethiopian Multiplication
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! True BASIC v6.007
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PROGRAM EthiopianMultiplication
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DECLARE DEF FNdouble
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DECLARE DEF FNhalve
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DECLARE DEF FNeven
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LET x = 17
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LET y = 34
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DO
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IF FNeven(x) = 0 THEN
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LET p = p + y
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PRINT x,y
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ELSE
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PRINT x," ---"
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END IF
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LET x = FNhalve(x)
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LET y = FNdouble(y)
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LOOP UNTIL x = 0
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PRINT " ", " ==="
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PRINT " ", p
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GET KEY done
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DEF FNdouble(A) = A * 2
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DEF FNhalve(A) = INT(A / 2)
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DEF FNeven(A) = MOD(A+1,2)
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END
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@ -1,33 +1,18 @@
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Procedure isEven(x)
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ProcedureReturn (x & 1) ! 1
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EndProcedure
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Procedure halveValue(x)
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ProcedureReturn x / 2
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EndProcedure
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Procedure doubleValue(x)
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ProcedureReturn x << 1
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EndProcedure
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Procedure EthiopianMultiply(x, y)
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Protected sum
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Print("Ethiopian multiplication of " + Str(x) + " and " + Str(y) + " ... ")
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Repeat
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If Not isEven(x)
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sum + y
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EndIf
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x = halveValue(x)
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y = doubleValue(y)
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Until x < 1
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PrintN(" equals " + Str(sum))
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ProcedureReturn sum
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EndProcedure
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If OpenConsole()
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EthiopianMultiply(17,34)
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Print(#CRLF$ + #CRLF$ + "Press ENTER to exit")
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Input()
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CloseConsole()
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EndIf
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x = 17
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y = 34
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tot = 0
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While x >= 1
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TextWindow.Write(x)
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TextWindow.CursorLeft = 10
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If Math.Remainder(x + 1, 2) = 0 Then
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tot = tot + y
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TextWindow.WriteLine(y)
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Else
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TextWindow.WriteLine("")
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EndIf
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x = Math.Floor(x / 2)
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y = 2 * y
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EndWhile
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TextWindow.Write("=")
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TextWindow.CursorLeft = 10
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TextWindow.WriteLine(tot)
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@ -11,26 +11,21 @@ Procedure doubleValue(x)
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EndProcedure
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Procedure EthiopianMultiply(x, y)
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Protected sum, sign = x
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Print("Ethiopian multiplication of " + Str(x) + " and " + Str(y) + " ...")
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Protected sum
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Print("Ethiopian multiplication of " + Str(x) + " and " + Str(y) + " ... ")
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Repeat
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If Not isEven(x)
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sum + y
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EndIf
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x = halveValue(x)
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y = doubleValue(y)
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Until x = 0
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If sign < 0 : sum * -1: EndIf
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Until x < 1
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PrintN(" equals " + Str(sum))
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ProcedureReturn sum
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EndProcedure
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If OpenConsole()
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EthiopianMultiply(17,34)
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EthiopianMultiply(-17,34)
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EthiopianMultiply(-17,-34)
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Print(#CRLF$ + #CRLF$ + "Press ENTER to exit")
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Input()
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@ -1,38 +1,38 @@
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10 LET HALVE=320
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20 LET DOUBLE=340
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30 LET EVEN=360
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40 DIM L(20)
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50 DIM R(20)
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60 INPUT L(1)
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70 INPUT R(1)
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80 LET I=1
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90 PRINT L(1),R(1)
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100 IF L(I)=1 THEN GOTO 200
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110 LET I=I+1
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120 IF I>20 THEN STOP
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130 LET X=L(I-1)
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140 GOSUB HALVE
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150 LET L(I)=Y
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160 LET X=R(I-1)
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170 GOSUB DOUBLE
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180 LET R(I)=Y
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190 GOTO 90
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200 FOR K=1 TO I
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210 LET X=L(K)
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220 GOSUB EVEN
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230 IF NOT Y THEN GOTO 260
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240 LET R(K)=0
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250 PRINT AT K-1,16;" "
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260 NEXT K
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270 LET A=0
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280 FOR K=1 TO I
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290 LET A=A+R(K)
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300 NEXT K
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310 GOTO 380
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320 LET Y=INT (X/2)
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330 RETURN
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340 LET Y=X*2
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350 RETURN
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360 LET Y=X/2=INT (X/2)
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370 RETURN
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380 PRINT AT I+1,16;A
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Procedure isEven(x)
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ProcedureReturn (x & 1) ! 1
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EndProcedure
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Procedure halveValue(x)
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ProcedureReturn x / 2
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EndProcedure
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Procedure doubleValue(x)
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ProcedureReturn x << 1
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EndProcedure
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Procedure EthiopianMultiply(x, y)
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Protected sum, sign = x
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Print("Ethiopian multiplication of " + Str(x) + " and " + Str(y) + " ...")
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Repeat
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If Not isEven(x)
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sum + y
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EndIf
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x = halveValue(x)
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y = doubleValue(y)
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Until x = 0
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If sign < 0 : sum * -1: EndIf
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PrintN(" equals " + Str(sum))
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ProcedureReturn sum
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EndProcedure
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If OpenConsole()
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EthiopianMultiply(17,34)
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EthiopianMultiply(-17,34)
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EthiopianMultiply(-17,-34)
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Print(#CRLF$ + #CRLF$ + "Press ENTER to exit")
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Input()
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CloseConsole()
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EndIf
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@ -1,29 +1,38 @@
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!RosettaCode: Ethiopian Multiplication
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! True BASIC v6.007
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PROGRAM EthiopianMultiplication
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DECLARE DEF FNdouble
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DECLARE DEF FNhalve
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DECLARE DEF FNeven
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LET x = 17
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LET y = 34
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DO
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IF FNeven(x) = 0 THEN
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LET p = p + y
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PRINT x,y
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ELSE
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PRINT x," ---"
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END IF
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LET x = FNhalve(x)
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LET y = FNdouble(y)
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LOOP UNTIL x = 0
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PRINT " ", " ==="
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PRINT " ", p
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GET KEY done
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DEF FNdouble(A) = A * 2
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DEF FNhalve(A) = INT(A / 2)
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DEF FNeven(A) = MOD(A+1,2)
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END
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10 LET HALVE=320
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20 LET DOUBLE=340
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30 LET EVEN=360
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40 DIM L(20)
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50 DIM R(20)
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60 INPUT L(1)
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70 INPUT R(1)
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80 LET I=1
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90 PRINT L(1),R(1)
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100 IF L(I)=1 THEN GOTO 200
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110 LET I=I+1
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120 IF I>20 THEN STOP
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130 LET X=L(I-1)
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140 GOSUB HALVE
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150 LET L(I)=Y
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160 LET X=R(I-1)
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170 GOSUB DOUBLE
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180 LET R(I)=Y
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190 GOTO 90
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200 FOR K=1 TO I
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210 LET X=L(K)
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220 GOSUB EVEN
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230 IF NOT Y THEN GOTO 260
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240 LET R(K)=0
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250 PRINT AT K-1,16;" "
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260 NEXT K
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270 LET A=0
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280 FOR K=1 TO I
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290 LET A=A+R(K)
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300 NEXT K
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310 GOTO 380
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320 LET Y=INT (X/2)
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330 RETURN
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340 LET Y=X*2
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350 RETURN
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360 LET Y=X/2=INT (X/2)
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370 RETURN
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380 PRINT AT I+1,16;A
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