Android Utililty Methods Array Last Index Of

List of utility methods to do Array Last Index Of

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Description

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

Method

intlastIndexOf(double[] array, double valueToFind, int startIndex)

Finds the last 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 will return #INDEX_NOT_FOUND (-1). 

if (ArrayUtils.isEmpty(array)) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    return INDEX_NOT_FOUND;
} else if (startIndex >= array.length) {
    startIndex = array.length - 1;
for (int i = startIndex; i >= 0; i--) {
    if (valueToFind == array[i]) {
        return i;
return INDEX_NOT_FOUND;
intlastIndexOf(double[] array, double valueToFind, int startIndex, double tolerance)

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

if (ArrayUtils.isEmpty(array)) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    return INDEX_NOT_FOUND;
} else if (startIndex >= array.length) {
    startIndex = array.length - 1;
double min = valueToFind - tolerance;
double max = valueToFind + tolerance;
for (int i = startIndex; i >= 0; i--) {
    if (array[i] >= min && array[i] <= max) {
        return i;
return INDEX_NOT_FOUND;
intlastIndexOf(float[] array, float valueToFind)

Finds the last index of the given value within the array.

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

return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
intlastIndexOf(float[] array, float valueToFind, int startIndex)

Finds the last 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 will return #INDEX_NOT_FOUND (-1). 

if (ArrayUtils.isEmpty(array)) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    return INDEX_NOT_FOUND;
} else if (startIndex >= array.length) {
    startIndex = array.length - 1;
for (int i = startIndex; i >= 0; i--) {
    if (valueToFind == array[i]) {
        return i;
return INDEX_NOT_FOUND;
intlastIndexOf(int[] array, int valueToFind)

Finds the last index of the given value within the array.

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

return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
intlastIndexOf(int[] array, int valueToFind, int startIndex)

Finds the last 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 will return #INDEX_NOT_FOUND (-1). 

if (array == null) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    return INDEX_NOT_FOUND;
} else if (startIndex >= array.length) {
    startIndex = array.length - 1;
for (int i = startIndex; i >= 0; i--) {
    if (valueToFind == array[i]) {
        return i;
return INDEX_NOT_FOUND;
intlastIndexOf(long[] array, long valueToFind)

Finds the last index of the given value within the array.

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

return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
intlastIndexOf(long[] array, long valueToFind, int startIndex)

Finds the last 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 will return #INDEX_NOT_FOUND (-1). 

if (array == null) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    return INDEX_NOT_FOUND;
} else if (startIndex >= array.length) {
    startIndex = array.length - 1;
for (int i = startIndex; i >= 0; i--) {
    if (valueToFind == array[i]) {
        return i;
return INDEX_NOT_FOUND;
intlastIndexOf(short[] array, short valueToFind)

Finds the last index of the given value within the array.

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

return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
intlastIndexOf(short[] array, short valueToFind, int startIndex)

Finds the last 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 will return #INDEX_NOT_FOUND (-1). 

if (array == null) {
    return INDEX_NOT_FOUND;
if (startIndex < 0) {
    return INDEX_NOT_FOUND;
} else if (startIndex >= array.length) {
    startIndex = array.length - 1;
for (int i = startIndex; i >= 0; i--) {
    if (valueToFind == array[i]) {
        return i;
return INDEX_NOT_FOUND;