66 lines
2.5 KiB
Java
66 lines
2.5 KiB
Java
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/*This Java program is to implement control table. Control tables are tables that control the control flow or play a major part in program control. There are no rigid rules about the structure or content of a control table—its qualifying attribute is its ability to direct control flow in some way through “execution” by a processor or interpreter. The design of such tables is sometimes referred to as table-driven design.
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In perhaps its simplest implementation, a control table may sometimes be a one-dimensional table for directly translating a raw data value to a corresponding subroutine offset, index or pointer using the raw data value either directly as the index to the array, or by performing some basic arithmetic on the data beforehand.*/
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import java.util.HashMap;
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import java.util.Map;
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public class ControlTable
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{
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private Map<String,Integer> controlTable;
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public ControlTable()
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{
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controlTable = new HashMap<String,Integer>();
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populateTable();
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}
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public int[] controlTable(int[] asciiCodes)
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{
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int[] index = new int[asciiCodes.length];
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for (int val = 0; val < asciiCodes.length; val++)
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{
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index[val] = controlTable.get(Integer.toHexString(asciiCodes[val]));
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}
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return index;
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}
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private void populateTable()
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{
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controlTable.put(Integer.toHexString(65), 01);
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controlTable.put(Integer.toHexString(68), 04);
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controlTable.put(Integer.toHexString(77), 03);
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controlTable.put(Integer.toHexString(83), 02);
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}
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public static void main (String...arg)
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{
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int[] asciiCodes = new int[4];
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int[] tableOutput;
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asciiCodes [0] = (int) 'A';
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asciiCodes [1] = (int) 'D';
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asciiCodes [2] = (int) 'M';
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asciiCodes [3] = (int) 'S';
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ControlTable controlTable = new ControlTable();
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tableOutput = controlTable.controlTable(asciiCodes);
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System.out.println("Input values ");
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System.out.print("( ");
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for (int i = 0; i < asciiCodes.length; i++)
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{
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System.out.print((char)asciiCodes[i] + " ");
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}
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System.out.print(")\n");
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System.out.println("New Index from Control table");
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System.out.print("( ");
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for (int i = 0; i < tableOutput.length; i++)
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{
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System.out.print(tableOutput[i] + " ");
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}
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System.out.print(")");
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}
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}
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/*
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Input values
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( A D M S )
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New Index from control table
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( 1 4 3 2 )
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