public static int sum(int[] array) {
	int total = 0;
	for (int i = 0 ; i < array.length ; i++) {
		total = total + array[i]; //x += array[i];
	}

	/*
	for (int i= array.length-1; i >= 0; i--) {
		total = total + array[i]; //x += array[i];
	}

	//even
	for (int i = 0 ; i < array.length ; i++) {
		if ( i % 2 == 0 ) {
			total = total + array[i]; 
		}
	}



	*/
	return total;
}

slide 89: typo on {2,2,3,4,5} should be {1,2,3,4,5}

-exercises to practice

int[] z = {1,2,3,4,5};
System.out.println(z);
x242352456

for (int k = 0; k < z.length; k++) {
	if (k == z.length - 1 ) {
		System.out.println(z[k]);
	}
	else {
	System.out.print(z[k] + ",");
	}
}

public static boolean areArraysEqual(int[] array1, int[] array2) {
	if (array1.length != array2.length)
	{
		return false;
	}

	for (int i=0; i < array1.length; i++) {
		if (array1[i] != array2[i]) {
				return false;
		}
	}
	return true;
}