Encontrar subsequencia array

import java.util.Arrays;

public class SearchArray {

	public static void main(String[] args) {

		 int[] arrayA = new int[] {2,1,4,5,1,2,4,5,1,2};
		 int[] arrayB = new int[] {1,2};
		 
		 System.out.println("posicao: " + search(arrayA, arrayB));
		 
	}
	
	public static int search(int[] a, int[] b) {
		
		int tamA = a.length;
		int tamB = b.length;
		
		if (tamA < tamB) return -1;		
		
		int[] tempArray = new int[tamB];
		for (int i = 0; i < (tamA - tamB + 1); i++) {
			System.arraycopy(a, i, tempArray, 0, tamB);
			if (Arrays.equals(tempArray,b))
				return i;			
		}
		
		return -1;
	}
}