private int[] mergeVals(int []vals){
		for (int j = 0 ; j < size-1 ; j++){
			if(vals[j] == 0){
				continue;	
			}
			if (vals[j] == vals[j+1]){
				vals[j] 	+= vals[j+1];
				vals[j+1] 	 = 0;
				score 		+= vals[j];
			}
		}
		return vals;
	}