BinaryReader

src/com/codefortomorrow/intermediate/chapter10/practice/BinaryReader.java

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+package com.codefortomorrow.intermediate.chapter10.practice;
+
+/*
+    Create a program called BinaryReader in which a 4 x 4
+    array of booleans is created. Have the computer loop
+    through the array, printing a 0 if the current element is
+    set to false and a 1 if it set to true.
+
+    Example Array:
+    {
+        {true, false, false, true},
+        {false, true, true, true},
+        {true, true, false, true},
+        {true, false, false, false}
+    }
+
+    Example Output:
+    1001
+    0111
+    1101
+    1000
+*/
+
+public class BinaryReader
+{
+    public static void main(String[] args)
+    {
+
+    }
+}

src/com/codefortomorrow/intermediate/chapter10/solutions/BinaryReader.java

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+package com.codefortomorrow.intermediate.chapter10.solutions;
+
+/*
+    Create a program called BinaryReader in which a 4 x 4
+    array of booleans is created. Have the computer loop
+    through the array, printing a 0 if the current element is
+    set to false and a 1 if it set to true.
+
+    Example Array:
+    {
+        {true, false, false, true},
+        {false, true, true, true},
+        {true, true, false, true},
+        {true, false, false, false}
+    }
+
+    Example Output:
+    1001
+    0111
+    1101
+    1000
+*/
+
+public class BinaryReader
+{
+    public static void main(String[] args)
+    {
+        //Create a 2D array of booleans
+        boolean[][] arr =
+        {
+            {true, false, false, true},
+            {false, true, true, true},
+            {true, true, false, true},
+            {true, false, false, false}
+        };
+
+        //Loop through the array using nested loops
+        for(int i = 0; i < arr.length; i++)
+        {
+            for(int j = 0; j < arr[0].length; j++)
+            {
+                //Check if current element is set to true
+                if(arr[i][j] == true)
+                {
+                    //Print out a 1 if set to true
+                    System.out.print(1);
+                }
+                //Otherwise, current element is set to false
+                else
+                {
+                    //Print out a 0 if set to false
+                    System.out.print(0);
+                }
+            }
+
+            //Move over to the next line
+            System.out.println();
+        }
+    }
+}