Ints lastIndexOf()函数|番石榴| Java
原文:https://www . geesforgeks . org/ints-last indexof-function-guava-Java/
番石榴的T1Ints。lastIndexOf() 返回数组中值目标最后一次出现的的索引。
语法:
*public static int
lastIndexOf(int[] array, int target)*
参数:
Array: An array of int values, which may be empty.* Target:* An original int value.
返回值:*ints . indexof()方法返回 最大索引 i 为哪个数组[i] ==目标，或者 -1* 如果不存在这样的索引。
例 1:
*// Java code to show implementation of
// Guava's Ints.lastIndexOf() method
import com.google.common.primitives.Ints;
import java.util.Arrays;
class GFG {
// Driver's code
public static void main(String[] args)
{
// Creating an integer array
int[] arr = { 1, 2, 3, 4, 3, 5, 3, 4 };
int target = 3;
// Using Ints.lastIndexOf() method to get the
// index of last appearance of a given element
// in array and return -1 if element is
// not found in the array
int index = Ints.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");
}
}
}*
*输出:
Target is present at index 6
例 2 :
// Java code to show implementation of
// Guava's Ints.lastIndexOf() method
import com.google.common.primitives.Ints;
import java.util.Arrays;
class GFG {
// Driver's code
public static void main(String[] args)
{
// Creating an integer array
int[] arr = { 3, 5, 7, 11, 13 };
int target = 17;
// Using Ints.lastIndexOf() method to get the
// index of last appearance of a given element
// in array and return -1 if element is
// not found in the array
int index = Ints.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");
}
}
}
输出:
Target is not present in the array
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