Repmat.java

package ch.makery.address;

public class Repmat {

	public static void main(String[] args) {

		int[][] oldArray;
		oldArray = new int[][] { { 1, 2, 4 }, { 5, 2, 1 } };
		int size = 4;

		MyTest.printArray(oldArray);

		int oldY = oldArray.length;
		int oldX = oldArray[0].length;
		int newArryHeight = oldY * size;
		int newArryWidth = oldX * size;
		int[][] current = new int[newArryHeight][newArryWidth];

		// Go through the new array length
		for (int x = 0; x < current.length; x++) {
			int indexY = 0;
			// Loop up to the given size
			for (int count = 0; count < size; count++) {
				for (int k = 0; k < oldY; k++) {
					int indexX = 0;
					// Loop up to the given size
					for (int z = 0; z < size; z++) {
						for (int j = 0; j < oldX; j++) {
							// Fill the new array from old values
							current[indexY][indexX] = oldArray[k][j];
							indexX++;
						}
					}
					indexY++;
				}
			}
		}

		Repmat.printArray(current);

	}

	public static void printArray(int[][] newArray) {
		System.out.println("======================================");
		for (int i = 0; i < newArray.length; i++) {
			for (int j = 0; j < newArray[0].length; j++) {
				System.out.print(newArray[i][j]);
			}
			System.out.println();
		}
	}

}