Mega Code Archive
Static methods from Arrays
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/*
License for Java 1.5 'Tiger': A Developer's Notebook
(O'Reilly) example package
Java 1.5 'Tiger': A Developer's Notebook (O'Reilly)
by Brett McLaughlin and David Flanagan.
ISBN: 0-596-00738-8
You can use the examples and the source code any way you want, but
please include a reference to where it comes from if you use it in
your own products or services. Also note that this software is
provided by the author "as is", with no expressed or implied warranties.
In no event shall the author be liable for any direct or indirect
damages arising in any way out of the use of this software.
*/
import java.util.Arrays;
import java.util.List;
public class ArraysTester {
private int[] ar;
public ArraysTester(int numValues) {
ar = new int[numValues];
for (int i=0; i < ar.length; i++) {
ar[i] = (1000 - (300 + i));
}
}
public int[] get() {
return ar;
}
public static void main(String[] args) {
ArraysTester tester = new ArraysTester(50);
int[] myArray = tester.get();
// Compare two arrays
int[] myOtherArray = tester.get().clone();
if (Arrays.equals(myArray, myOtherArray)) {
System.out.println("The two arrays are equal!");
} else {
System.out.println("The two arrays are not equal!");
}
// Fill up some values
Arrays.fill(myOtherArray, 2, 10, new Double(Math.PI).intValue());
myArray[30] = 98;
// Print array, as is
System.out.println("Here's the unsorted array...");
System.out.println(Arrays.toString(myArray));
System.out.println();
// Sort the array
Arrays.sort(myArray);
// print array, sorted
System.out.println("Here's the sorted array...");
System.out.println(Arrays.toString(myArray));
System.out.println();
// Get the index of a particular value
int index = Arrays.binarySearch(myArray, 98);
System.out.println("98 is located in the array at index " + index);
String[][] ticTacToe = { {"X", "O", "O"},
{"O", "X", "X"},
{"X", "O", "X"}};
System.out.println(Arrays.deepToString(ticTacToe));
String[][] ticTacToe2 = { {"O", "O", "X"},
{"O", "X", "X"},
{"X", "O", "X"}};
String[][] ticTacToe3 = { {"X", "O", "O"},
{"O", "X", "X"},
{"X", "O", "X"}};
if (Arrays.deepEquals(ticTacToe, ticTacToe2)) {
System.out.println("Boards 1 and 2 are equal.");
} else {
System.out.println("Boards 1 and 2 are not equal.");
}
if (Arrays.deepEquals(ticTacToe, ticTacToe3)) {
System.out.println("Boards 1 and 3 are equal.");
} else {
System.out.println("Boards 1 and 3 are not equal.");
}
}
}
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