Java Utililty Methods Array Max Value

if ((values == null) || (values.length == 0)) {
    throw new IllegalArgumentException("Cannot find the max of a null or empty array.");
int max = values[0];
for (int value : values) {
    max = (max < value) ? value : max;
return max;
...

int maxi = 0;
double maxv = a[0];
for (int i = 1; i < a.length; i++) {
    if (Math.abs(a[i]) > maxv) {
        maxi = i;
        maxv = Math.abs(a[i]);
return maxi;

double max = Double.NEGATIVE_INFINITY;
int maxIndex = 0;
int index = 0;
for (double value : values) {
    if (value > max) {
        max = value;
        maxIndex = index;
    index++;
return maxIndex;

int index = -1;
if (a != null && a.length != 0) {
    double max = a[0];
    index = 0;
    for (int i = 1; i < a.length; i++) {
        if (a[i] > max) {
            max = a[i];
            index = i;
...

if (arr.length <= 0)
    return -1;
double max = Double.MIN_VALUE;
int index = 0;
for (int i = 0; i < arr.length; i++) {
    if (arr[i] > max) {
        max = arr[i];
        index = i;
...

double max = arr[0];
int index = 0;
for (int i = 0; i < arr.length; i++) {
    double val = arr[i];
    if (val > max) {
        max = val;
        index = i;
return index;

double max = -999.0;
int maxI = 0;
for (int i = 0; i < array.length; i++) {
    if (array[i] >= max) {
        max = array[i];
        maxI = i;
return maxI;

int i, size = array.length, maxIndex = 0;
double maxValue = array[maxIndex];
for (i = 1; i < size; i++) {
    if (maxValue < array[i]) {
        maxIndex = i;
        maxValue = array[maxIndex];
return maxIndex;

int mIdx = -1;
double maxValue = -Double.MAX_VALUE;
for (int i = 0; i < arrays.length; i++) {
    if (arrays[i] > maxValue) {
        maxValue = arrays[i];
        mIdx = i;
return mIdx;

double maximum = 0;
int maxIndex = 0;
for (int i = 0; i < doubles.length; i++) {
    if ((i == 0) || (doubles[i] > maximum)) {
        maxIndex = i;
        maximum = doubles[i];
return maxIndex;