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47 lines
1.3 KiB
Java
47 lines
1.3 KiB
Java
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import edu.princeton.cs.introcs.BinaryStdIn;
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import edu.princeton.cs.introcs.StdOut;
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/*************************************************************************
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* Compilation: javac BinaryDump.java
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* Execution: java BinaryDump N < file
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* Dependencies: BinaryStdIn.java
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* Data file: http://introcs.cs.princeton.edu/stdlib/abra.txt
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*
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* Reads in a binary file and writes out the bits, N per line.
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*
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* % more abra.txt
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* ABRACADABRA!
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*
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* % java BinaryDump 16 < abra.txt
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* 0100000101000010
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* 0101001001000001
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* 0100001101000001
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* 0100010001000001
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* 0100001001010010
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* 0100000100100001
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* 96 bits
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*
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*************************************************************************/
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public class BinaryDump {
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public static void main(String[] args) {
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int BITS_PER_LINE = 16;
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if (args.length == 1) {
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BITS_PER_LINE = Integer.parseInt(args[0]);
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}
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int count;
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for (count = 0; !BinaryStdIn.isEmpty(); count++) {
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if (BITS_PER_LINE == 0) { BinaryStdIn.readBoolean(); continue; }
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else if (count != 0 && count % BITS_PER_LINE == 0) StdOut.println();
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if (BinaryStdIn.readBoolean()) StdOut.print(1);
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else StdOut.print(0);
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}
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if (BITS_PER_LINE != 0) StdOut.println();
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StdOut.println(count + " bits");
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}
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}
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