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MODULE Ch2 EXPORTS Main;
IMPORT IO;
TYPE
PArr = REF ARRAY OF INTEGER;
VAR
A1:ARRAY[0..7] OF INTEGER := ARRAY OF INTEGER{1,0,2,3,0,4,5,0};
A2:ARRAY[0..2] OF INTEGER := ARRAY OF INTEGER{1,2,3};
A3:ARRAY[0..4] OF INTEGER := ARRAY OF INTEGER{0,3,0,4,5};
Ret1,Ret2,Ret3:PArr;
PROCEDURE DuplicateZeros(VAR A:ARRAY OF INTEGER):PArr =
VAR
I,J:INTEGER := 0;
Ret:PArr;
BEGIN
Ret := NEW(PArr,NUMBER(A));
WHILE J <= LAST(A) DO
IF A[I] = 0 THEN
Ret[J] := 0; INC(J); Ret[J] := 0;
INC(I); INC(J);
ELSE
Ret[J] := A[I]; INC(I); INC(J);
END
END;
RETURN Ret
END DuplicateZeros;
PROCEDURE PrintArray(VAR A:ARRAY OF INTEGER) =
BEGIN
FOR I := FIRST(A) TO LAST(A) DO IO.PutInt(A[I]); IO.PutChar(' ') END;
IO.Put("\n");
END PrintArray;
BEGIN
Ret1 := DuplicateZeros(A1);
Ret2 := DuplicateZeros(A2);
Ret3 := DuplicateZeros(A3);
PrintArray(Ret1^);
PrintArray(Ret2^);
PrintArray(Ret3^);
END Ch2.
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