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(Object[] array, Object objectToFind)

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

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

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

Finds the last index of the given object 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;
if (objectToFind == null) {
    for (int i = startIndex; i >= 0; i--) {
        if (array[i] == null) {
            return i;
} else if (array.getClass().getComponentType()
        .isInstance(objectToFind)) {
    for (int i = startIndex; i >= 0; i--) {
        if (objectToFind.equals(array[i])) {
            return i;
return INDEX_NOT_FOUND;
intlastIndexOf(boolean[] array, boolean valueToFind)

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

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

return lastIndexOf(array, valueToFind, Integer.MAX_VALUE);
intlastIndexOf(boolean[] array, boolean 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(byte[] array, byte 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(byte[] array, byte 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(char[] array, char 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(char[] array, char 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(double[] array, double 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(double[] array, double valueToFind, double tolerance)

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

return lastIndexOf(array, valueToFind, Integer.MAX_VALUE, tolerance);