Java Guava | Chars.lastIndexOf() method with Examples
The lastIndexOf() method of Chars Class in Guava library is used to find the last index of the given char value in a char array. This char value to be searched and the char array in which it is to be searched, both are passed as a parameter to this method. It returns an integer value which is the last index of the specified char value. If the value is not found, it returns -1.
Syntax:
public static int lastIndexOf(char[] array,
char target)
Parameters: This method accepts two mandatory parameters:
- array: which is the array of char values in which the char value is to searched.
- target: which is char value to be searched for last index in the char array.
Return Value: This method returns an integer value which is the last index of the specified char value. If the value is not found, it returns -1.
Below programs illustrates this method:
Example 1:
import com.google.common.primitives.Chars;
import java.util.Arrays;
class GFG {
public static void main(String[] args)
{
char [] arr = { 'a' , 'b' , 'c' , 'd' ,
'b' , 'c' , 'b' , 'd' };
char target = 'b' ;
int index
= Chars.lastIndexOf(arr, target);
if (index != - 1 ) {
System.out.println( "Target is present"
+ " at index "
+ index);
}
else {
System.out.println( "Target is not present"
+ " in the array" );
}
}
}
|
Output:
Target is present at index 6
Example 2:
import com.google.common.primitives.Chars;
import java.util.Arrays;
class GFG {
public static void main(String[] args)
{
char [] arr = { 'a' , 'b' , 'c' , 'd' ,
'b' , 'c' , 'b' , 'd' };
char target = 'z' ;
int index
= Chars.lastIndexOf(arr, target);
if (index != - 1 ) {
System.out.println( "Target is present"
+ " at index "
+ index);
}
else {
System.out.println( "Target is not present"
+ " in the array" );
}
}
}
|
Output:
Target is not present in the array
Reference: https://google.github.io/guava/releases/18.0/api/docs/com/google/common/primitives/Chars.html#lastIndexOf(char[], %20char)
Last Updated :
31 Jan, 2019
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