Java Utililty Methods Array Find

for (int a1 : arr1) {
    if (!find(a1, arr2)) {
        return false;
return true;

return findAllArgumentPermutations(allArguments, 0, 0, new Object[allArguments.length],
        new ArrayList<Object[]>());

List<int[][]> allPossibleRotations = new ArrayList<>();
allPossibleRotations.add(matrix);
allPossibleRotations.add(flipInPlace(matrix));
allPossibleRotations.add(mirror(matrix[0].length, matrix.length, matrix));
allPossibleRotations.addAll(findAllPossibleRightRotations(allPossibleRotations.get(0)));
allPossibleRotations.addAll(findAllPossibleRightRotations(allPossibleRotations.get(2)));
return allPossibleRotations;

int len = scopes.length;
len++;
double[] vals = new double[len];
vals[0] = income;
for (int i = 1; i < len; i++) {
    vals[i] = Long.parseLong(scopes[i - 1]);
Arrays.sort(vals);
...

if (array == null)
    throw new RuntimeException("Can't do index. Collection is Null");
for (int i = 0; i < array.length; i++)
    if (array[i].equals(value))
        return i;
return -1;

int x = new ArrayList<>(Arrays.asList(data)).indexOf(object);
if (x == -1) {
    throw new NoSuchElementException("StringUtils : index lookup in array failed for object " + object
            + ". Data length is " + data.length);
return x;

if (isEmpty(array)) {
    return null;
ArrayList<Integer> result = new ArrayList<Integer>();
for (int index = 0; index < array.length; index++) {
    int num = array[index];
    if (i == num) {
        result.add(index);
...