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Java Guava Shorts.lastIndexOf()用法及代碼示例


Guava庫中Shorts類的lastIndexOf()方法用於在short數組中查找給定short值的最後一個索引。要搜索的short值和要在其中搜索的short數組都作為參數傳遞給此方法。它返回一個整數值,該整數值是指定的short值的最後一個索引。如果找不到該值,則返回-1。

用法:

public static int lastIndexOf(short[] array,
                              short target)

參數:此方法接受兩個強製性參數:


  • array:這是在其中搜索短值的短值數組。
  • target:這是在short數組中要搜索的最後一個索引的short值。

返回值:此方法返回一個整數值,該整數值是指定的short值的最後一個索引。如果找不到該值,則返回-1。

下麵的程序演示了此方法:

範例1:

// Java code to show implementation of 
// Guava's Shorts.lastIndexOf() method 
  
import com.google.common.primitives.Shorts; 
import java.util.Arrays; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
  
        // Creating a short array 
        short[] arr = { 1, 2, 3, 4, 3, 5, 3, 4 }; 
  
        short target = 3; 
  
        // Using Shorts.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 
            = Shorts.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"); 
        } 
    } 
}
輸出:
Target is present at index 6

範例2:

// Java code to show implementation of 
// Guava's Shorts.lastIndexOf() method 
  
import com.google.common.primitives.Shorts; 
import java.util.Arrays; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
        // Creating a short array 
        short[] arr = { 3, 5, 7, 11, 13 }; 
  
        short target = 17; 
  
        // Using Shorts.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 
            = Shorts.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"); 
        } 
    } 
}
輸出:
Target is not present in the array

參考: https://google.github.io/guava/releases/23.0/api/docs/com/google/common/primitives/Shorts.html#lastIndexOf-short:A-short-



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注:本文由純淨天空篩選整理自Sahil_Bansall大神的英文原創作品 Java Guava | Shorts.lastIndexOf() method with Examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。