Java Guava Chars.contains()用法及代碼示例

Guava庫中Chars類的contains()方法用於檢查指定的char值數組中是否存在指定的值。要搜索的char值和要在其中搜索的char數組都被當作參數。

用法:

public static boolean contains(char[] array, 
                               char target)

參數：此方法接受兩個強製性參數：

array:這是一個char值數組，其中將搜索目標值。
target:這是要搜索數組中是否存在的char值。

返回值：此方法返回一個布爾值，該布爾值說明目標char值是否存在於指定的char數組中。如果目標值存在於數組中，則返回True。否則返回False。

以下示例程序旨在說明contains()方法的使用：

範例1：

// Java code to show implementation of 
// Guava's Chars.contains() method 
  
import com.google.common.primitives.Chars; 
import java.util.Arrays; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
  
        // Creating a character array 
        char[] arr = { 'g', 'e', 'e', 'k', 's' }; 
  
        char target = 'k'; 
  
        // Using Chars.contains() method to search 
        // for an element in the array. The method 
        // returns true if element is found, else 
        // returns false 
        if (Chars.contains(arr, target)) 
            System.out.println("Target is present"
                               + " in the array"); 
        else
            System.out.println("Target is not present"
                               + " in the array"); 
    } 
}

輸出：

Target is present in the array

範例2：

// Java code to show implementation of 
// Guava's Chars.contains() method 
  
import com.google.common.primitives.Chars; 
import java.util.Arrays; 
  
class GFG { 
  
    // Driver's code 
    public static void main(String[] args) 
    { 
  
        // Creating a character array 
        char[] arr = { 'g', 'e', 'e', 'k', 's' }; 
  
        char target = 'a'; 
  
        // Using Chars.contains() method to search 
        // for an element in the array. The method 
        // returns true if element is found, else 
        // returns false 
        if (Chars.contains(arr, target)) 
            System.out.println("Target is present"
                               + " in the array"); 
        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/18.0/api/docs/com/google/common/primitives/Chars.html#contains(char[], %20char)

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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 | Chars.contains() 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。