Guava – Shorts.indexOf方法及实例
Guava的Shorts类的Shorts.indexOf(short[] array, short[] target)方法接受两个参数array和target。如果目标存在于数组中，该方法返回其第一次出现的起始位置。如果目标在数组中不存在，该方法返回-1。
语法：
public static int indexOf(short[] array, short[] target)
参数： 该方法接受两个参数。
array：是一个整数数组，目标数组将在其中检查索引。target: 作为指定数组的一个子序列，要搜索的数组。返回值： 该方法返回一个整数值，如下所示。
如果目标数组在数组中存在，它返回目标数组第一次出现的起始位置。否则，如果目标在数组中不存在，则返回-1。异常情况：该方法没有抛出任何异常。
下面的例子说明了上述方法的实现。
例1:
// Java code to show implementation of// Guava's Shorts.indexOf(short[] array,// short[] target) method import com.google.common.primitives.Shorts;import java.util.Arrays; class GFG { // Driver's code public static void main(String[] args) { // Creating an short array short[] arr = { 1, 2, 3, 4, 3, 5 }; short[] target = { 3, 4, 3 }; System.out.println("Array: " + Arrays.toString(arr)); System.out.println("Target Array: " + Arrays.toString(target)); // Using Shorts.indexOf(short[] array, short[] target) // method to get the start position of the first // occurrence of the specified target within array, // or -1 if there is no such occurrence. int index = Shorts.indexOf(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:
Array: [1, 2, 3, 4, 3, 5]Target Array: [3, 4, 3]Target is present at index 2
例2:
// Java code to show implementation of// Guava's Shorts.indexOf(short[] array,// short[] target) method import com.google.common.primitives.Shorts;import java.util.Arrays; class GFG { // Driver's code public static void main(String[] args) { // Creating an short array short[] arr = { 3, 5, 7, 11, 13 }; short[] target = { 23, 37 }; System.out.println("Array: " + Arrays.toString(arr)); System.out.println("Target Array: " + Arrays.toString(target)); // Using Shorts.indexOf(short[] array, short[] target) // method to get the start position of the first // occurrence of the specified target within array, // or -1 if there is no such occurrence. int index = Shorts.indexOf(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:
Array: [3, 5, 7, 11, 13]Target Array: [23, 37]Target is not present in the array
参考资料:
https://google.github.io/guava/releases/23.0/api/docs/com/google/common/primitives/Shorts.html#indexOf-short:A-short:A-
