Android Utililty Methods Array Index Of

List of utility methods to do Array Index Of

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Description

The list of methods to do Array Index Of are organized into topic(s).

Method

intindexOf(double[] array, double valueToFind)

Finds the index of the given value in the array.

This method returns #INDEX_NOT_FOUND (-1) for a null input array.

return indexOf(array, valueToFind, 0);
intindexOf(double[] array, double valueToFind, double tolerance)

Finds the index of the given value within a given tolerance in the array. 

return indexOf(array, valueToFind, 0, tolerance);
intindexOf(double[] array, double valueToFind, int startIndex)

Finds the index of the given value in the array starting at the given index.

This method returns #INDEX_NOT_FOUND (-1) for a null input array.

A negative startIndex is treated as zero. 

if (ArrayUtils.isEmpty(array)) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    startIndex = 0;
for (int i = startIndex; i < array.length; i++) {
    if (valueToFind == array[i]) {
...
intindexOf(double[] array, double valueToFind, int startIndex, double tolerance)

Finds the index of the given value in the array starting at the given index. 

if (ArrayUtils.isEmpty(array)) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    startIndex = 0;
double min = valueToFind - tolerance;
double max = valueToFind + tolerance;
...
intindexOf(float[] array, float valueToFind)

Finds the index of the given value in the array.

This method returns #INDEX_NOT_FOUND (-1) for a null input array.

return indexOf(array, valueToFind, 0);
intindexOf(float[] array, float valueToFind, int startIndex)

Finds the index of the given value in the array starting at the given index.

This method returns #INDEX_NOT_FOUND (-1) for a null input array.

A negative startIndex is treated as zero. 

if (ArrayUtils.isEmpty(array)) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    startIndex = 0;
for (int i = startIndex; i < array.length; i++) {
    if (valueToFind == array[i]) {
...
intindexOf(int n, int[] array)
index Of 
for (int i = 0; i != array.length; ++i) {
    if (array[i] == n)
        return i;
return -1;
intindexOf(int[] array, int valueToFind)

Finds the index of the given value in the array.

This method returns #INDEX_NOT_FOUND (-1) for a null input array.

return indexOf(array, valueToFind, 0);
intindexOf(int[] array, int valueToFind, int startIndex)

Finds the index of the given value in the array starting at the given index.

This method returns #INDEX_NOT_FOUND (-1) for a null input array.

A negative startIndex is treated as zero. 

if (array == null) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    startIndex = 0;
for (int i = startIndex; i < array.length; i++) {
    if (valueToFind == array[i]) {
...
intindexOf(long[] array, long valueToFind)

Finds the index of the given value in the array.

This method returns #INDEX_NOT_FOUND (-1) for a null input array.

return indexOf(array, valueToFind, 0);