lastIndexOf

fun CharSequence.lastIndexOf(
    char: Char,
    startIndex: Int = lastIndex,
    ignoreCase: Boolean = false
): Int
(source)

Returns the index within this char sequence of the last occurrence of the specified character, starting from the specified startIndex.

Parameters

startIndex - The index of character to start searching at. The search proceeds backward toward the beginning of the string.

ignoreCase - true to ignore character case when matching a character. By default false.

Return An index of the first occurrence of char or -1 if none is found.

fun CharSequence.lastIndexOf(
    string: String,
    startIndex: Int = lastIndex,
    ignoreCase: Boolean = false
): Int
(source)

Returns the index within this char sequence of the last occurrence of the specified string, starting from the specified startIndex.

Parameters

startIndex - The index of character to start searching at. The search proceeds backward toward the beginning of the string.

ignoreCase - true to ignore character case when matching a string. By default false.

Return An index of the first occurrence of string or -1 if none is found.